diff --git a/assets/javascripts/bootstrap.js b/assets/javascripts/bootstrap.js
index b3252968bd..8066073bc4 100644
--- a/assets/javascripts/bootstrap.js
+++ b/assets/javascripts/bootstrap.js
@@ -1,5 +1,5 @@
 /*!
- * Bootstrap v3.4.0 (http://getbootstrap.com)
+ * Bootstrap v3.4.0 (https://getbootstrap.com/)
  * Copyright 2011-2018 Twitter, Inc.
  * Licensed under the MIT license
  */
@@ -18,9 +18,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: transition.js v3.4.0
- * http://getbootstrap.com/javascript/#transitions
+ * https://getbootstrap.com/docs/3.4/javascript/#transitions
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -28,7 +28,7 @@ if (typeof jQuery === 'undefined') {
 +function ($) {
   'use strict';
 
-  // CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)
+  // CSS TRANSITION SUPPORT (Shoutout: https://modernizr.com/)
   // ============================================================
 
   function transitionEnd() {
@@ -50,7 +50,7 @@ if (typeof jQuery === 'undefined') {
     return false // explicit for ie8 (  ._.)
   }
 
-  // http://blog.alexmaccaw.com/css-transitions
+  // https://blog.alexmaccaw.com/css-transitions
   $.fn.emulateTransitionEnd = function (duration) {
     var called = false
     var $el = this
@@ -78,9 +78,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: alert.js v3.4.0
- * http://getbootstrap.com/javascript/#alerts
+ * https://getbootstrap.com/docs/3.4/javascript/#alerts
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -174,9 +174,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: button.js v3.4.0
- * http://getbootstrap.com/javascript/#buttons
+ * https://getbootstrap.com/docs/3.4/javascript/#buttons
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -300,9 +300,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: carousel.js v3.4.0
- * http://getbootstrap.com/javascript/#carousel
+ * https://getbootstrap.com/docs/3.4/javascript/#carousel
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -547,9 +547,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: collapse.js v3.4.0
- * http://getbootstrap.com/javascript/#collapse
+ * https://getbootstrap.com/docs/3.4/javascript/#collapse
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -760,9 +760,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: dropdown.js v3.4.0
- * http://getbootstrap.com/javascript/#dropdowns
+ * https://getbootstrap.com/docs/3.4/javascript/#dropdowns
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -926,9 +926,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: modal.js v3.4.0
- * http://getbootstrap.com/javascript/#modals
+ * https://getbootstrap.com/docs/3.4/javascript/#modals
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -940,15 +940,16 @@ if (typeof jQuery === 'undefined') {
   // ======================
 
   var Modal = function (element, options) {
-    this.options             = options
-    this.$body               = $(document.body)
-    this.$element            = $(element)
-    this.$dialog             = this.$element.find('.modal-dialog')
-    this.$backdrop           = null
-    this.isShown             = null
-    this.originalBodyPad     = null
-    this.scrollbarWidth      = 0
+    this.options = options
+    this.$body = $(document.body)
+    this.$element = $(element)
+    this.$dialog = this.$element.find('.modal-dialog')
+    this.$backdrop = null
+    this.isShown = null
+    this.originalBodyPad = null
+    this.scrollbarWidth = 0
     this.ignoreBackdropClick = false
+    this.fixedContent = '.navbar-fixed-top, .navbar-fixed-bottom'
 
     if (this.options.remote) {
       this.$element
@@ -959,7 +960,7 @@ if (typeof jQuery === 'undefined') {
     }
   }
 
-  Modal.VERSION  = '3.4.0'
+  Modal.VERSION = '3.4.0'
 
   Modal.TRANSITION_DURATION = 300
   Modal.BACKDROP_TRANSITION_DURATION = 150
@@ -976,7 +977,7 @@ if (typeof jQuery === 'undefined') {
 
   Modal.prototype.show = function (_relatedTarget) {
     var that = this
-    var e    = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })
+    var e = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })
 
     this.$element.trigger(e)
 
@@ -1067,8 +1068,8 @@ if (typeof jQuery === 'undefined') {
       .off('focusin.bs.modal') // guard against infinite focus loop
       .on('focusin.bs.modal', $.proxy(function (e) {
         if (document !== e.target &&
-            this.$element[0] !== e.target &&
-            !this.$element.has(e.target).length) {
+          this.$element[0] !== e.target &&
+          !this.$element.has(e.target).length) {
           this.$element.trigger('focus')
         }
       }, this))
@@ -1170,7 +1171,7 @@ if (typeof jQuery === 'undefined') {
     var modalIsOverflowing = this.$element[0].scrollHeight > document.documentElement.clientHeight
 
     this.$element.css({
-      paddingLeft:  !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
+      paddingLeft: !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
       paddingRight: this.bodyIsOverflowing && !modalIsOverflowing ? this.scrollbarWidth : ''
     })
   }
@@ -1195,11 +1196,26 @@ if (typeof jQuery === 'undefined') {
   Modal.prototype.setScrollbar = function () {
     var bodyPad = parseInt((this.$body.css('padding-right') || 0), 10)
     this.originalBodyPad = document.body.style.paddingRight || ''
-    if (this.bodyIsOverflowing) this.$body.css('padding-right', bodyPad + this.scrollbarWidth)
+    var scrollbarWidth = this.scrollbarWidth
+    if (this.bodyIsOverflowing) {
+      this.$body.css('padding-right', bodyPad + scrollbarWidth)
+      $(this.fixedContent).each(function (index, element) {
+        var actualPadding = element.style.paddingRight
+        var calculatedPadding = $(element).css('padding-right')
+        $(element)
+          .data('padding-right', actualPadding)
+          .css('padding-right', parseFloat(calculatedPadding) + scrollbarWidth + 'px')
+      })
+    }
   }
 
   Modal.prototype.resetScrollbar = function () {
     this.$body.css('padding-right', this.originalBodyPad)
+    $(this.fixedContent).each(function (index, element) {
+      var padding = $(element).data('padding-right')
+      $(element).removeData('padding-right')
+      element.style.paddingRight = padding ? padding : ''
+    })
   }
 
   Modal.prototype.measureScrollbar = function () { // thx walsh
@@ -1217,8 +1233,8 @@ if (typeof jQuery === 'undefined') {
 
   function Plugin(option, _relatedTarget) {
     return this.each(function () {
-      var $this   = $(this)
-      var data    = $this.data('bs.modal')
+      var $this = $(this)
+      var data = $this.data('bs.modal')
       var options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option)
 
       if (!data) $this.data('bs.modal', (data = new Modal(this, options)))
@@ -1229,7 +1245,7 @@ if (typeof jQuery === 'undefined') {
 
   var old = $.fn.modal
 
-  $.fn.modal             = Plugin
+  $.fn.modal = Plugin
   $.fn.modal.Constructor = Modal
 
 
@@ -1246,13 +1262,13 @@ if (typeof jQuery === 'undefined') {
   // ==============
 
   $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function (e) {
-    var $this   = $(this)
-    var href    = $this.attr('href')
-    var target  = $this.attr('data-target') ||
+    var $this = $(this)
+    var href = $this.attr('href')
+    var target = $this.attr('data-target') ||
       (href && href.replace(/.*(?=#[^\s]+$)/, '')) // strip for ie7
 
     var $target = $(document).find(target)
-    var option  = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())
+    var option = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())
 
     if ($this.is('a')) e.preventDefault()
 
@@ -1269,10 +1285,10 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: tooltip.js v3.4.0
- * http://getbootstrap.com/javascript/#tooltip
+ * https://getbootstrap.com/docs/3.4/javascript/#tooltip
  * Inspired by the original jQuery.tipsy by Jason Frame
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -1790,9 +1806,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: popover.js v3.4.0
- * http://getbootstrap.com/javascript/#popovers
+ * https://getbootstrap.com/docs/3.4/javascript/#popovers
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -1857,8 +1873,8 @@ if (typeof jQuery === 'undefined') {
 
     return $e.attr('data-content')
       || (typeof o.content == 'function' ?
-            o.content.call($e[0]) :
-            o.content)
+        o.content.call($e[0]) :
+        o.content)
   }
 
   Popover.prototype.arrow = function () {
@@ -1899,9 +1915,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: scrollspy.js v3.4.0
- * http://getbootstrap.com/javascript/#scrollspy
+ * https://getbootstrap.com/docs/3.4/javascript/#scrollspy
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -2072,9 +2088,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: tab.js v3.4.0
- * http://getbootstrap.com/javascript/#tabs
+ * https://getbootstrap.com/docs/3.4/javascript/#tabs
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -2145,15 +2161,15 @@ if (typeof jQuery === 'undefined') {
       $active
         .removeClass('active')
         .find('> .dropdown-menu > .active')
-          .removeClass('active')
+        .removeClass('active')
         .end()
         .find('[data-toggle="tab"]')
-          .attr('aria-expanded', false)
+        .attr('aria-expanded', false)
 
       element
         .addClass('active')
         .find('[data-toggle="tab"]')
-          .attr('aria-expanded', true)
+        .attr('aria-expanded', true)
 
       if (transition) {
         element[0].offsetWidth // reflow for transition
@@ -2165,10 +2181,10 @@ if (typeof jQuery === 'undefined') {
       if (element.parent('.dropdown-menu').length) {
         element
           .closest('li.dropdown')
-            .addClass('active')
+          .addClass('active')
           .end()
           .find('[data-toggle="tab"]')
-            .attr('aria-expanded', true)
+          .attr('aria-expanded', true)
       }
 
       callback && callback()
@@ -2228,9 +2244,9 @@ if (typeof jQuery === 'undefined') {
 
 /* ========================================================================
  * Bootstrap: affix.js v3.4.0
- * http://getbootstrap.com/javascript/#affix
+ * https://getbootstrap.com/docs/3.4/javascript/#affix
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap.min.js b/assets/javascripts/bootstrap.min.js
index dbd6b712c7..4cd8219908 100644
--- a/assets/javascripts/bootstrap.min.js
+++ b/assets/javascripts/bootstrap.min.js
@@ -1 +1,6 @@
-if("undefined"==typeof jQuery)throw new Error("Bootstrap's JavaScript requires jQuery");!function(t){"use strict";var e=jQuery.fn.jquery.split(" ")[0].split(".");if(e[0]<2&&e[1]<9||1==e[0]&&9==e[1]&&e[2]<1||3<e[0])throw new Error("Bootstrap's JavaScript requires jQuery version 1.9.1 or higher, but lower than version 4")}(),function(o){"use strict";o.fn.emulateTransitionEnd=function(t){var e=!1,i=this;o(this).one("bsTransitionEnd",function(){e=!0});return setTimeout(function(){e||o(i).trigger(o.support.transition.end)},t),this},o(function(){o.support.transition=function(){var t=document.createElement("bootstrap"),e={WebkitTransition:"webkitTransitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd otransitionend",transition:"transitionend"};for(var i in e)if(void 0!==t.style[i])return{end:e[i]};return!1}(),o.support.transition&&(o.event.special.bsTransitionEnd={bindType:o.support.transition.end,delegateType:o.support.transition.end,handle:function(t){if(o(t.target).is(this))return t.handleObj.handler.apply(this,arguments)}})})}(jQuery),function(s){"use strict";var e='[data-dismiss="alert"]',a=function(t){s(t).on("click",e,this.close)};a.VERSION="3.4.0",a.TRANSITION_DURATION=150,a.prototype.close=function(t){var e=s(this),i=e.attr("data-target");i||(i=(i=e.attr("href"))&&i.replace(/.*(?=#[^\s]*$)/,"")),i="#"===i?[]:i;var o=s(document).find(i);function n(){o.detach().trigger("closed.bs.alert").remove()}t&&t.preventDefault(),o.length||(o=e.closest(".alert")),o.trigger(t=s.Event("close.bs.alert")),t.isDefaultPrevented()||(o.removeClass("in"),s.support.transition&&o.hasClass("fade")?o.one("bsTransitionEnd",n).emulateTransitionEnd(a.TRANSITION_DURATION):n())};var t=s.fn.alert;s.fn.alert=function(i){return this.each(function(){var t=s(this),e=t.data("bs.alert");e||t.data("bs.alert",e=new a(this)),"string"==typeof i&&e[i].call(t)})},s.fn.alert.Constructor=a,s.fn.alert.noConflict=function(){return s.fn.alert=t,this},s(document).on("click.bs.alert.data-api",e,a.prototype.close)}(jQuery),function(s){"use strict";var n=function(t,e){this.$element=s(t),this.options=s.extend({},n.DEFAULTS,e),this.isLoading=!1};function i(o){return this.each(function(){var t=s(this),e=t.data("bs.button"),i="object"==typeof o&&o;e||t.data("bs.button",e=new n(this,i)),"toggle"==o?e.toggle():o&&e.setState(o)})}n.VERSION="3.4.0",n.DEFAULTS={loadingText:"loading..."},n.prototype.setState=function(t){var e="disabled",i=this.$element,o=i.is("input")?"val":"html",n=i.data();t+="Text",null==n.resetText&&i.data("resetText",i[o]()),setTimeout(s.proxy(function(){i[o](null==n[t]?this.options[t]:n[t]),"loadingText"==t?(this.isLoading=!0,i.addClass(e).attr(e,e).prop(e,!0)):this.isLoading&&(this.isLoading=!1,i.removeClass(e).removeAttr(e).prop(e,!1))},this),0)},n.prototype.toggle=function(){var t=!0,e=this.$element.closest('[data-toggle="buttons"]');if(e.length){var i=this.$element.find("input");"radio"==i.prop("type")?(i.prop("checked")&&(t=!1),e.find(".active").removeClass("active"),this.$element.addClass("active")):"checkbox"==i.prop("type")&&(i.prop("checked")!==this.$element.hasClass("active")&&(t=!1),this.$element.toggleClass("active")),i.prop("checked",this.$element.hasClass("active")),t&&i.trigger("change")}else this.$element.attr("aria-pressed",!this.$element.hasClass("active")),this.$element.toggleClass("active")};var t=s.fn.button;s.fn.button=i,s.fn.button.Constructor=n,s.fn.button.noConflict=function(){return s.fn.button=t,this},s(document).on("click.bs.button.data-api",'[data-toggle^="button"]',function(t){var e=s(t.target).closest(".btn");i.call(e,"toggle"),s(t.target).is('input[type="radio"], input[type="checkbox"]')||(t.preventDefault(),e.is("input,button")?e.trigger("focus"):e.find("input:visible,button:visible").first().trigger("focus"))}).on("focus.bs.button.data-api blur.bs.button.data-api",'[data-toggle^="button"]',function(t){s(t.target).closest(".btn").toggleClass("focus",/^focus(in)?$/.test(t.type))})}(jQuery),function(p){"use strict";var c=function(t,e){this.$element=p(t),this.$indicators=this.$element.find(".carousel-indicators"),this.options=e,this.paused=null,this.sliding=null,this.interval=null,this.$active=null,this.$items=null,this.options.keyboard&&this.$element.on("keydown.bs.carousel",p.proxy(this.keydown,this)),"hover"==this.options.pause&&!("ontouchstart"in document.documentElement)&&this.$element.on("mouseenter.bs.carousel",p.proxy(this.pause,this)).on("mouseleave.bs.carousel",p.proxy(this.cycle,this))};function r(n){return this.each(function(){var t=p(this),e=t.data("bs.carousel"),i=p.extend({},c.DEFAULTS,t.data(),"object"==typeof n&&n),o="string"==typeof n?n:i.slide;e||t.data("bs.carousel",e=new c(this,i)),"number"==typeof n?e.to(n):o?e[o]():i.interval&&e.pause().cycle()})}c.VERSION="3.4.0",c.TRANSITION_DURATION=600,c.DEFAULTS={interval:5e3,pause:"hover",wrap:!0,keyboard:!0},c.prototype.keydown=function(t){if(!/input|textarea/i.test(t.target.tagName)){switch(t.which){case 37:this.prev();break;case 39:this.next();break;default:return}t.preventDefault()}},c.prototype.cycle=function(t){return t||(this.paused=!1),this.interval&&clearInterval(this.interval),this.options.interval&&!this.paused&&(this.interval=setInterval(p.proxy(this.next,this),this.options.interval)),this},c.prototype.getItemIndex=function(t){return this.$items=t.parent().children(".item"),this.$items.index(t||this.$active)},c.prototype.getItemForDirection=function(t,e){var i=this.getItemIndex(e);if(("prev"==t&&0===i||"next"==t&&i==this.$items.length-1)&&!this.options.wrap)return e;var o=(i+("prev"==t?-1:1))%this.$items.length;return this.$items.eq(o)},c.prototype.to=function(t){var e=this,i=this.getItemIndex(this.$active=this.$element.find(".item.active"));if(!(t>this.$items.length-1||t<0))return this.sliding?this.$element.one("slid.bs.carousel",function(){e.to(t)}):i==t?this.pause().cycle():this.slide(i<t?"next":"prev",this.$items.eq(t))},c.prototype.pause=function(t){return t||(this.paused=!0),this.$element.find(".next, .prev").length&&p.support.transition&&(this.$element.trigger(p.support.transition.end),this.cycle(!0)),this.interval=clearInterval(this.interval),this},c.prototype.next=function(){if(!this.sliding)return this.slide("next")},c.prototype.prev=function(){if(!this.sliding)return this.slide("prev")},c.prototype.slide=function(t,e){var i=this.$element.find(".item.active"),o=e||this.getItemForDirection(t,i),n=this.interval,s="next"==t?"left":"right",a=this;if(o.hasClass("active"))return this.sliding=!1;var r=o[0],l=p.Event("slide.bs.carousel",{relatedTarget:r,direction:s});if(this.$element.trigger(l),!l.isDefaultPrevented()){if(this.sliding=!0,n&&this.pause(),this.$indicators.length){this.$indicators.find(".active").removeClass("active");var h=p(this.$indicators.children()[this.getItemIndex(o)]);h&&h.addClass("active")}var d=p.Event("slid.bs.carousel",{relatedTarget:r,direction:s});return p.support.transition&&this.$element.hasClass("slide")?(o.addClass(t),"object"==typeof o&&o.length&&o[0].offsetWidth,i.addClass(s),o.addClass(s),i.one("bsTransitionEnd",function(){o.removeClass([t,s].join(" ")).addClass("active"),i.removeClass(["active",s].join(" 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t[0]-e[0]}).each(function(){t.offsets.push(this[0]),t.targets.push(this[1])})},n.prototype.process=function(){var t,e=this.$scrollElement.scrollTop()+this.options.offset,i=this.getScrollHeight(),o=this.options.offset+i-this.$scrollElement.height(),n=this.offsets,s=this.targets,a=this.activeTarget;if(this.scrollHeight!=i&&this.refresh(),o<=e)return a!=(t=s[s.length-1])&&this.activate(t);if(a&&e<n[0])return this.activeTarget=null,this.clear();for(t=n.length;t--;)a!=s[t]&&e>=n[t]&&(n[t+1]===undefined||e<n[t+1])&&this.activate(s[t])},n.prototype.activate=function(t){this.activeTarget=t,this.clear();var e=this.selector+'[data-target="'+t+'"],'+this.selector+'[href="'+t+'"]',i=s(e).parents("li").addClass("active");i.parent(".dropdown-menu").length&&(i=i.closest("li.dropdown").addClass("active")),i.trigger("activate.bs.scrollspy")},n.prototype.clear=function(){s(this.selector).parentsUntil(this.options.target,".active").removeClass("active")};var t=s.fn.scrollspy;s.fn.scrollspy=e,s.fn.scrollspy.Constructor=n,s.fn.scrollspy.noConflict=function(){return s.fn.scrollspy=t,this},s(window).on("load.bs.scrollspy.data-api",function(){s('[data-spy="scroll"]').each(function(){var t=s(this);e.call(t,t.data())})})}(jQuery),function(r){"use strict";var a=function(t){this.element=r(t)};function e(i){return this.each(function(){var t=r(this),e=t.data("bs.tab");e||t.data("bs.tab",e=new a(this)),"string"==typeof i&&e[i]()})}a.VERSION="3.4.0",a.TRANSITION_DURATION=150,a.prototype.show=function(){var t=this.element,e=t.closest("ul:not(.dropdown-menu)"),i=t.data("target");if(i||(i=(i=t.attr("href"))&&i.replace(/.*(?=#[^\s]*$)/,"")),!t.parent("li").hasClass("active")){var o=e.find(".active:last a"),n=r.Event("hide.bs.tab",{relatedTarget:t[0]}),s=r.Event("show.bs.tab",{relatedTarget:o[0]});if(o.trigger(n),t.trigger(s),!s.isDefaultPrevented()&&!n.isDefaultPrevented()){var a=r(document).find(i);this.activate(t.closest("li"),e),this.activate(a,a.parent(),function(){o.trigger({type:"hidden.bs.tab",relatedTarget:t[0]}),t.trigger({type:"shown.bs.tab",relatedTarget:o[0]})})}}},a.prototype.activate=function(t,e,i){var o=e.find("> .active"),n=i&&r.support.transition&&(o.length&&o.hasClass("fade")||!!e.find("> .fade").length);function s(){o.removeClass("active").find("> .dropdown-menu > .active").removeClass("active").end().find('[data-toggle="tab"]').attr("aria-expanded",!1),t.addClass("active").find('[data-toggle="tab"]').attr("aria-expanded",!0),n?(t[0].offsetWidth,t.addClass("in")):t.removeClass("fade"),t.parent(".dropdown-menu").length&&t.closest("li.dropdown").addClass("active").end().find('[data-toggle="tab"]').attr("aria-expanded",!0),i&&i()}o.length&&n?o.one("bsTransitionEnd",s).emulateTransitionEnd(a.TRANSITION_DURATION):s(),o.removeClass("in")};var t=r.fn.tab;r.fn.tab=e,r.fn.tab.Constructor=a,r.fn.tab.noConflict=function(){return r.fn.tab=t,this};var i=function(t){t.preventDefault(),e.call(r(this),"show")};r(document).on("click.bs.tab.data-api",'[data-toggle="tab"]',i).on("click.bs.tab.data-api",'[data-toggle="pill"]',i)}(jQuery),function(l){"use strict";var h=function(t,e){this.options=l.extend({},h.DEFAULTS,e);var i=this.options.target===h.DEFAULTS.target?l(this.options.target):l(document).find(this.options.target);this.$target=i.on("scroll.bs.affix.data-api",l.proxy(this.checkPosition,this)).on("click.bs.affix.data-api",l.proxy(this.checkPositionWithEventLoop,this)),this.$element=l(t),this.affixed=null,this.unpin=null,this.pinnedOffset=null,this.checkPosition()};function i(o){return this.each(function(){var t=l(this),e=t.data("bs.affix"),i="object"==typeof o&&o;e||t.data("bs.affix",e=new h(this,i)),"string"==typeof o&&e[o]()})}h.VERSION="3.4.0",h.RESET="affix affix-top affix-bottom",h.DEFAULTS={offset:0,target:window},h.prototype.getState=function(t,e,i,o){var n=this.$target.scrollTop(),s=this.$element.offset(),a=this.$target.height();if(null!=i&&"top"==this.affixed)return n<i&&"top";if("bottom"==this.affixed)return null!=i?!(n+this.unpin<=s.top)&&"bottom":!(n+a<=t-o)&&"bottom";var r=null==this.affixed,l=r?n:s.top;return null!=i&&n<=i?"top":null!=o&&t-o<=l+(r?a:e)&&"bottom"},h.prototype.getPinnedOffset=function(){if(this.pinnedOffset)return this.pinnedOffset;this.$element.removeClass(h.RESET).addClass("affix");var t=this.$target.scrollTop(),e=this.$element.offset();return this.pinnedOffset=e.top-t},h.prototype.checkPositionWithEventLoop=function(){setTimeout(l.proxy(this.checkPosition,this),1)},h.prototype.checkPosition=function(){if(this.$element.is(":visible")){var t=this.$element.height(),e=this.options.offset,i=e.top,o=e.bottom,n=Math.max(l(document).height(),l(document.body).height());"object"!=typeof e&&(o=i=e),"function"==typeof i&&(i=e.top(this.$element)),"function"==typeof o&&(o=e.bottom(this.$element));var s=this.getState(n,t,i,o);if(this.affixed!=s){null!=this.unpin&&this.$element.css("top","");var a="affix"+(s?"-"+s:""),r=l.Event(a+".bs.affix");if(this.$element.trigger(r),r.isDefaultPrevented())return;this.affixed=s,this.unpin="bottom"==s?this.getPinnedOffset():null,this.$element.removeClass(h.RESET).addClass(a).trigger(a.replace("affix","affixed")+".bs.affix")}"bottom"==s&&this.$element.offset({top:n-t-o})}};var t=l.fn.affix;l.fn.affix=i,l.fn.affix.Constructor=h,l.fn.affix.noConflict=function(){return l.fn.affix=t,this},l(window).on("load",function(){l('[data-spy="affix"]').each(function(){var t=l(this),e=t.data();e.offset=e.offset||{},null!=e.offsetBottom&&(e.offset.bottom=e.offsetBottom),null!=e.offsetTop&&(e.offset.top=e.offsetTop),i.call(t,e)})})}(jQuery);
\ No newline at end of file
diff --git a/assets/javascripts/bootstrap/affix.js b/assets/javascripts/bootstrap/affix.js
index 481987a95e..60608420cb 100644
--- a/assets/javascripts/bootstrap/affix.js
+++ b/assets/javascripts/bootstrap/affix.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: affix.js v3.4.0
- * http://getbootstrap.com/javascript/#affix
+ * https://getbootstrap.com/docs/3.4/javascript/#affix
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/alert.js b/assets/javascripts/bootstrap/alert.js
index 2052d1ad1a..362b7b5044 100644
--- a/assets/javascripts/bootstrap/alert.js
+++ b/assets/javascripts/bootstrap/alert.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: alert.js v3.4.0
- * http://getbootstrap.com/javascript/#alerts
+ * https://getbootstrap.com/docs/3.4/javascript/#alerts
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/button.js b/assets/javascripts/bootstrap/button.js
index e18b8aeaed..8fdf9ddcd0 100644
--- a/assets/javascripts/bootstrap/button.js
+++ b/assets/javascripts/bootstrap/button.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: button.js v3.4.0
- * http://getbootstrap.com/javascript/#buttons
+ * https://getbootstrap.com/docs/3.4/javascript/#buttons
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/carousel.js b/assets/javascripts/bootstrap/carousel.js
index bf780fb2c1..020648ceb5 100644
--- a/assets/javascripts/bootstrap/carousel.js
+++ b/assets/javascripts/bootstrap/carousel.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: carousel.js v3.4.0
- * http://getbootstrap.com/javascript/#carousel
+ * https://getbootstrap.com/docs/3.4/javascript/#carousel
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/collapse.js b/assets/javascripts/bootstrap/collapse.js
index 5cf64de1c1..d87eee5c6d 100644
--- a/assets/javascripts/bootstrap/collapse.js
+++ b/assets/javascripts/bootstrap/collapse.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: collapse.js v3.4.0
- * http://getbootstrap.com/javascript/#collapse
+ * https://getbootstrap.com/docs/3.4/javascript/#collapse
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/dropdown.js b/assets/javascripts/bootstrap/dropdown.js
index c193f11d38..481e04fd1f 100644
--- a/assets/javascripts/bootstrap/dropdown.js
+++ b/assets/javascripts/bootstrap/dropdown.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: dropdown.js v3.4.0
- * http://getbootstrap.com/javascript/#dropdowns
+ * https://getbootstrap.com/docs/3.4/javascript/#dropdowns
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/modal.js b/assets/javascripts/bootstrap/modal.js
index 329be05382..9fbce5d9ad 100644
--- a/assets/javascripts/bootstrap/modal.js
+++ b/assets/javascripts/bootstrap/modal.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: modal.js v3.4.0
- * http://getbootstrap.com/javascript/#modals
+ * https://getbootstrap.com/docs/3.4/javascript/#modals
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -14,15 +14,16 @@
   // ======================
 
   var Modal = function (element, options) {
-    this.options             = options
-    this.$body               = $(document.body)
-    this.$element            = $(element)
-    this.$dialog             = this.$element.find('.modal-dialog')
-    this.$backdrop           = null
-    this.isShown             = null
-    this.originalBodyPad     = null
-    this.scrollbarWidth      = 0
+    this.options = options
+    this.$body = $(document.body)
+    this.$element = $(element)
+    this.$dialog = this.$element.find('.modal-dialog')
+    this.$backdrop = null
+    this.isShown = null
+    this.originalBodyPad = null
+    this.scrollbarWidth = 0
     this.ignoreBackdropClick = false
+    this.fixedContent = '.navbar-fixed-top, .navbar-fixed-bottom'
 
     if (this.options.remote) {
       this.$element
@@ -33,7 +34,7 @@
     }
   }
 
-  Modal.VERSION  = '3.4.0'
+  Modal.VERSION = '3.4.0'
 
   Modal.TRANSITION_DURATION = 300
   Modal.BACKDROP_TRANSITION_DURATION = 150
@@ -50,7 +51,7 @@
 
   Modal.prototype.show = function (_relatedTarget) {
     var that = this
-    var e    = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })
+    var e = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })
 
     this.$element.trigger(e)
 
@@ -141,8 +142,8 @@
       .off('focusin.bs.modal') // guard against infinite focus loop
       .on('focusin.bs.modal', $.proxy(function (e) {
         if (document !== e.target &&
-            this.$element[0] !== e.target &&
-            !this.$element.has(e.target).length) {
+          this.$element[0] !== e.target &&
+          !this.$element.has(e.target).length) {
           this.$element.trigger('focus')
         }
       }, this))
@@ -244,7 +245,7 @@
     var modalIsOverflowing = this.$element[0].scrollHeight > document.documentElement.clientHeight
 
     this.$element.css({
-      paddingLeft:  !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
+      paddingLeft: !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
       paddingRight: this.bodyIsOverflowing && !modalIsOverflowing ? this.scrollbarWidth : ''
     })
   }
@@ -269,11 +270,26 @@
   Modal.prototype.setScrollbar = function () {
     var bodyPad = parseInt((this.$body.css('padding-right') || 0), 10)
     this.originalBodyPad = document.body.style.paddingRight || ''
-    if (this.bodyIsOverflowing) this.$body.css('padding-right', bodyPad + this.scrollbarWidth)
+    var scrollbarWidth = this.scrollbarWidth
+    if (this.bodyIsOverflowing) {
+      this.$body.css('padding-right', bodyPad + scrollbarWidth)
+      $(this.fixedContent).each(function (index, element) {
+        var actualPadding = element.style.paddingRight
+        var calculatedPadding = $(element).css('padding-right')
+        $(element)
+          .data('padding-right', actualPadding)
+          .css('padding-right', parseFloat(calculatedPadding) + scrollbarWidth + 'px')
+      })
+    }
   }
 
   Modal.prototype.resetScrollbar = function () {
     this.$body.css('padding-right', this.originalBodyPad)
+    $(this.fixedContent).each(function (index, element) {
+      var padding = $(element).data('padding-right')
+      $(element).removeData('padding-right')
+      element.style.paddingRight = padding ? padding : ''
+    })
   }
 
   Modal.prototype.measureScrollbar = function () { // thx walsh
@@ -291,8 +307,8 @@
 
   function Plugin(option, _relatedTarget) {
     return this.each(function () {
-      var $this   = $(this)
-      var data    = $this.data('bs.modal')
+      var $this = $(this)
+      var data = $this.data('bs.modal')
       var options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option)
 
       if (!data) $this.data('bs.modal', (data = new Modal(this, options)))
@@ -303,7 +319,7 @@
 
   var old = $.fn.modal
 
-  $.fn.modal             = Plugin
+  $.fn.modal = Plugin
   $.fn.modal.Constructor = Modal
 
 
@@ -320,13 +336,13 @@
   // ==============
 
   $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function (e) {
-    var $this   = $(this)
-    var href    = $this.attr('href')
-    var target  = $this.attr('data-target') ||
+    var $this = $(this)
+    var href = $this.attr('href')
+    var target = $this.attr('data-target') ||
       (href && href.replace(/.*(?=#[^\s]+$)/, '')) // strip for ie7
 
     var $target = $(document).find(target)
-    var option  = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())
+    var option = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())
 
     if ($this.is('a')) e.preventDefault()
 
diff --git a/assets/javascripts/bootstrap/popover.js b/assets/javascripts/bootstrap/popover.js
index a61f2b8d11..f72c32af00 100644
--- a/assets/javascripts/bootstrap/popover.js
+++ b/assets/javascripts/bootstrap/popover.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: popover.js v3.4.0
- * http://getbootstrap.com/javascript/#popovers
+ * https://getbootstrap.com/docs/3.4/javascript/#popovers
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -67,8 +67,8 @@
 
     return $e.attr('data-content')
       || (typeof o.content == 'function' ?
-            o.content.call($e[0]) :
-            o.content)
+        o.content.call($e[0]) :
+        o.content)
   }
 
   Popover.prototype.arrow = function () {
diff --git a/assets/javascripts/bootstrap/scrollspy.js b/assets/javascripts/bootstrap/scrollspy.js
index fd3e9aff1a..487a9fa5be 100644
--- a/assets/javascripts/bootstrap/scrollspy.js
+++ b/assets/javascripts/bootstrap/scrollspy.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: scrollspy.js v3.4.0
- * http://getbootstrap.com/javascript/#scrollspy
+ * https://getbootstrap.com/docs/3.4/javascript/#scrollspy
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/tab.js b/assets/javascripts/bootstrap/tab.js
index 4f9ad9ff9d..79511fc669 100644
--- a/assets/javascripts/bootstrap/tab.js
+++ b/assets/javascripts/bootstrap/tab.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: tab.js v3.4.0
- * http://getbootstrap.com/javascript/#tabs
+ * https://getbootstrap.com/docs/3.4/javascript/#tabs
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -73,15 +73,15 @@
       $active
         .removeClass('active')
         .find('> .dropdown-menu > .active')
-          .removeClass('active')
+        .removeClass('active')
         .end()
         .find('[data-toggle="tab"]')
-          .attr('aria-expanded', false)
+        .attr('aria-expanded', false)
 
       element
         .addClass('active')
         .find('[data-toggle="tab"]')
-          .attr('aria-expanded', true)
+        .attr('aria-expanded', true)
 
       if (transition) {
         element[0].offsetWidth // reflow for transition
@@ -93,10 +93,10 @@
       if (element.parent('.dropdown-menu').length) {
         element
           .closest('li.dropdown')
-            .addClass('active')
+          .addClass('active')
           .end()
           .find('[data-toggle="tab"]')
-            .attr('aria-expanded', true)
+          .attr('aria-expanded', true)
       }
 
       callback && callback()
diff --git a/assets/javascripts/bootstrap/tooltip.js b/assets/javascripts/bootstrap/tooltip.js
index f7b0d00e79..223ec0c96c 100644
--- a/assets/javascripts/bootstrap/tooltip.js
+++ b/assets/javascripts/bootstrap/tooltip.js
@@ -1,9 +1,9 @@
 /* ========================================================================
  * Bootstrap: tooltip.js v3.4.0
- * http://getbootstrap.com/javascript/#tooltip
+ * https://getbootstrap.com/docs/3.4/javascript/#tooltip
  * Inspired by the original jQuery.tipsy by Jason Frame
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/assets/javascripts/bootstrap/transition.js b/assets/javascripts/bootstrap/transition.js
index 1801320591..a7b7e038b0 100644
--- a/assets/javascripts/bootstrap/transition.js
+++ b/assets/javascripts/bootstrap/transition.js
@@ -1,8 +1,8 @@
 /* ========================================================================
  * Bootstrap: transition.js v3.4.0
- * http://getbootstrap.com/javascript/#transitions
+ * https://getbootstrap.com/docs/3.4/javascript/#transitions
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
@@ -10,7 +10,7 @@
 +function ($) {
   'use strict';
 
-  // CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)
+  // CSS TRANSITION SUPPORT (Shoutout: https://modernizr.com/)
   // ============================================================
 
   function transitionEnd() {
@@ -32,7 +32,7 @@
     return false // explicit for ie8 (  ._.)
   }
 
-  // http://blog.alexmaccaw.com/css-transitions
+  // https://blog.alexmaccaw.com/css-transitions
   $.fn.emulateTransitionEnd = function (duration) {
     var called = false
     var $el = this
diff --git a/assets/stylesheets/_bootstrap.scss b/assets/stylesheets/_bootstrap.scss
index 201fb017c7..3d6fa3a469 100644
--- a/assets/stylesheets/_bootstrap.scss
+++ b/assets/stylesheets/_bootstrap.scss
@@ -1,6 +1,6 @@
 /*!
- * Bootstrap v3.4.0 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+ * Bootstrap v3.4.0 (https://getbootstrap.com/)
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/assets/stylesheets/bootstrap/_alerts.scss b/assets/stylesheets/bootstrap/_alerts.scss
index beecbc1081..f9e69bd084 100644
--- a/assets/stylesheets/bootstrap/_alerts.scss
+++ b/assets/stylesheets/bootstrap/_alerts.scss
@@ -38,7 +38,8 @@
 //
 // Expand the right padding and account for the close button's positioning.
 
-.alert-dismissable, // The misspelled .alert-dismissable was deprecated in 3.2.0.
+// The misspelled .alert-dismissable was deprecated in 3.2.0.
+.alert-dismissable,
 .alert-dismissible {
   padding-right: ($alert-padding + 20);
 
diff --git a/assets/stylesheets/bootstrap/_breadcrumbs.scss b/assets/stylesheets/bootstrap/_breadcrumbs.scss
index 535b7d8ee8..67e39d909a 100644
--- a/assets/stylesheets/bootstrap/_breadcrumbs.scss
+++ b/assets/stylesheets/bootstrap/_breadcrumbs.scss
@@ -13,7 +13,7 @@
   > li {
     display: inline-block;
 
-    + li::before {
+    + li:before {
       padding: 0 5px;
       color: $breadcrumb-color;
       // [converter] Workaround for https://github.com/sass/libsass/issues/1115
diff --git a/assets/stylesheets/bootstrap/_carousel.scss b/assets/stylesheets/bootstrap/_carousel.scss
index d4aa227030..52a1f7bff0 100644
--- a/assets/stylesheets/bootstrap/_carousel.scss
+++ b/assets/stylesheets/bootstrap/_carousel.scss
@@ -154,12 +154,12 @@
   }
 
   .icon-prev {
-    &::before {
+    &:before {
       content: "\2039";// SINGLE LEFT-POINTING ANGLE QUOTATION MARK (U+2039)
     }
   }
   .icon-next {
-    &::before {
+    &:before {
       content: "\203a";// SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (U+203A)
     }
   }
diff --git a/assets/stylesheets/bootstrap/_close.scss b/assets/stylesheets/bootstrap/_close.scss
index 3b74d8a973..a858a8f367 100644
--- a/assets/stylesheets/bootstrap/_close.scss
+++ b/assets/stylesheets/bootstrap/_close.scss
@@ -33,4 +33,5 @@ button.close {
   background: transparent;
   border: 0;
   -webkit-appearance: none;
+  appearance: none;
 }
diff --git a/assets/stylesheets/bootstrap/_forms.scss b/assets/stylesheets/bootstrap/_forms.scss
index 11404276f9..d2e2bac5cd 100644
--- a/assets/stylesheets/bootstrap/_forms.scss
+++ b/assets/stylesheets/bootstrap/_forms.scss
@@ -54,6 +54,7 @@ input[type="search"] {
   // be added to `.form-control` as it's not specific enough. For details, see
   // https://github.com/twbs/bootstrap/issues/11586.
   -webkit-appearance: none;
+  appearance: none;
 }
 
 // Position radios and checkboxes better
diff --git a/assets/stylesheets/bootstrap/_glyphicons.scss b/assets/stylesheets/bootstrap/_glyphicons.scss
index 5fe3661577..bd5966dd26 100644
--- a/assets/stylesheets/bootstrap/_glyphicons.scss
+++ b/assets/stylesheets/bootstrap/_glyphicons.scss
@@ -34,274 +34,274 @@
 }
 
 // Individual icons
-.glyphicon-asterisk               { &::before { content: "\002a"; } }
-.glyphicon-plus                   { &::before { content: "\002b"; } }
+.glyphicon-asterisk               { &:before { content: "\002a"; } }
+.glyphicon-plus                   { &:before { content: "\002b"; } }
 .glyphicon-euro,
-.glyphicon-eur                    { &::before { content: "\20ac"; } }
-.glyphicon-minus                  { &::before { content: "\2212"; } }
-.glyphicon-cloud                  { &::before { content: "\2601"; } }
-.glyphicon-envelope               { &::before { content: "\2709"; } }
-.glyphicon-pencil                 { &::before { content: "\270f"; } }
-.glyphicon-glass                  { &::before { content: "\e001"; } }
-.glyphicon-music                  { &::before { content: "\e002"; } }
-.glyphicon-search                 { &::before { content: "\e003"; } }
-.glyphicon-heart                  { &::before { content: "\e005"; } }
-.glyphicon-star                   { &::before { content: "\e006"; } }
-.glyphicon-star-empty             { &::before { content: "\e007"; } }
-.glyphicon-user                   { &::before { content: "\e008"; } }
-.glyphicon-film                   { &::before { content: "\e009"; } }
-.glyphicon-th-large               { &::before { content: "\e010"; } }
-.glyphicon-th                     { &::before { content: "\e011"; } }
-.glyphicon-th-list                { &::before { content: "\e012"; } }
-.glyphicon-ok                     { &::before { content: "\e013"; } }
-.glyphicon-remove                 { &::before { content: "\e014"; } }
-.glyphicon-zoom-in                { &::before { content: "\e015"; } }
-.glyphicon-zoom-out               { &::before { content: "\e016"; } }
-.glyphicon-off                    { &::before { content: "\e017"; } }
-.glyphicon-signal                 { &::before { content: "\e018"; } }
-.glyphicon-cog                    { &::before { content: "\e019"; } }
-.glyphicon-trash                  { &::before { content: "\e020"; } }
-.glyphicon-home                   { &::before { content: "\e021"; } }
-.glyphicon-file                   { &::before { content: "\e022"; } }
-.glyphicon-time                   { &::before { content: "\e023"; } }
-.glyphicon-road                   { &::before { content: "\e024"; } }
-.glyphicon-download-alt           { &::before { content: "\e025"; } }
-.glyphicon-download               { &::before { content: "\e026"; } }
-.glyphicon-upload                 { &::before { content: "\e027"; } }
-.glyphicon-inbox                  { &::before { content: "\e028"; } }
-.glyphicon-play-circle            { &::before { content: "\e029"; } }
-.glyphicon-repeat                 { &::before { content: "\e030"; } }
-.glyphicon-refresh                { &::before { content: "\e031"; } }
-.glyphicon-list-alt               { &::before { content: "\e032"; } }
-.glyphicon-lock                   { &::before { content: "\e033"; } }
-.glyphicon-flag                   { &::before { content: "\e034"; } }
-.glyphicon-headphones             { &::before { content: "\e035"; } }
-.glyphicon-volume-off             { &::before { content: "\e036"; } }
-.glyphicon-volume-down            { &::before { content: "\e037"; } }
-.glyphicon-volume-up              { &::before { content: "\e038"; } }
-.glyphicon-qrcode                 { &::before { content: "\e039"; } }
-.glyphicon-barcode                { &::before { content: "\e040"; } }
-.glyphicon-tag                    { &::before { content: "\e041"; } }
-.glyphicon-tags                   { &::before { content: "\e042"; } }
-.glyphicon-book                   { &::before { content: "\e043"; } }
-.glyphicon-bookmark               { &::before { content: "\e044"; } }
-.glyphicon-print                  { &::before { content: "\e045"; } }
-.glyphicon-camera                 { &::before { content: "\e046"; } }
-.glyphicon-font                   { &::before { content: "\e047"; } }
-.glyphicon-bold                   { &::before { content: "\e048"; } }
-.glyphicon-italic                 { &::before { content: "\e049"; } }
-.glyphicon-text-height            { &::before { content: "\e050"; } }
-.glyphicon-text-width             { &::before { content: "\e051"; } }
-.glyphicon-align-left             { &::before { content: "\e052"; } }
-.glyphicon-align-center           { &::before { content: "\e053"; } }
-.glyphicon-align-right            { &::before { content: "\e054"; } }
-.glyphicon-align-justify          { &::before { content: "\e055"; } }
-.glyphicon-list                   { &::before { content: "\e056"; } }
-.glyphicon-indent-left            { &::before { content: "\e057"; } }
-.glyphicon-indent-right           { &::before { content: "\e058"; } }
-.glyphicon-facetime-video         { &::before { content: "\e059"; } }
-.glyphicon-picture                { &::before { content: "\e060"; } }
-.glyphicon-map-marker             { &::before { content: "\e062"; } }
-.glyphicon-adjust                 { &::before { content: "\e063"; } }
-.glyphicon-tint                   { &::before { content: "\e064"; } }
-.glyphicon-edit                   { &::before { content: "\e065"; } }
-.glyphicon-share                  { &::before { content: "\e066"; } }
-.glyphicon-check                  { &::before { content: "\e067"; } }
-.glyphicon-move                   { &::before { content: "\e068"; } }
-.glyphicon-step-backward          { &::before { content: "\e069"; } }
-.glyphicon-fast-backward          { &::before { content: "\e070"; } }
-.glyphicon-backward               { &::before { content: "\e071"; } }
-.glyphicon-play                   { &::before { content: "\e072"; } }
-.glyphicon-pause                  { &::before { content: "\e073"; } }
-.glyphicon-stop                   { &::before { content: "\e074"; } }
-.glyphicon-forward                { &::before { content: "\e075"; } }
-.glyphicon-fast-forward           { &::before { content: "\e076"; } }
-.glyphicon-step-forward           { &::before { content: "\e077"; } }
-.glyphicon-eject                  { &::before { content: "\e078"; } }
-.glyphicon-chevron-left           { &::before { content: "\e079"; } }
-.glyphicon-chevron-right          { &::before { content: "\e080"; } }
-.glyphicon-plus-sign              { &::before { content: "\e081"; } }
-.glyphicon-minus-sign             { &::before { content: "\e082"; } }
-.glyphicon-remove-sign            { &::before { content: "\e083"; } }
-.glyphicon-ok-sign                { &::before { content: "\e084"; } }
-.glyphicon-question-sign          { &::before { content: "\e085"; } }
-.glyphicon-info-sign              { &::before { content: "\e086"; } }
-.glyphicon-screenshot             { &::before { content: "\e087"; } }
-.glyphicon-remove-circle          { &::before { content: "\e088"; } }
-.glyphicon-ok-circle              { &::before { content: "\e089"; } }
-.glyphicon-ban-circle             { &::before { content: "\e090"; } }
-.glyphicon-arrow-left             { &::before { content: "\e091"; } }
-.glyphicon-arrow-right            { &::before { content: "\e092"; } }
-.glyphicon-arrow-up               { &::before { content: "\e093"; } }
-.glyphicon-arrow-down             { &::before { content: "\e094"; } }
-.glyphicon-share-alt              { &::before { content: "\e095"; } }
-.glyphicon-resize-full            { &::before { content: "\e096"; } }
-.glyphicon-resize-small           { &::before { content: "\e097"; } }
-.glyphicon-exclamation-sign       { &::before { content: "\e101"; } }
-.glyphicon-gift                   { &::before { content: "\e102"; } }
-.glyphicon-leaf                   { &::before { content: "\e103"; } }
-.glyphicon-fire                   { &::before { content: "\e104"; } }
-.glyphicon-eye-open               { &::before { content: "\e105"; } }
-.glyphicon-eye-close              { &::before { content: "\e106"; } }
-.glyphicon-warning-sign           { &::before { content: "\e107"; } }
-.glyphicon-plane                  { &::before { content: "\e108"; } }
-.glyphicon-calendar               { &::before { content: "\e109"; } }
-.glyphicon-random                 { &::before { content: "\e110"; } }
-.glyphicon-comment                { &::before { content: "\e111"; } }
-.glyphicon-magnet                 { &::before { content: "\e112"; } }
-.glyphicon-chevron-up             { &::before { content: "\e113"; } }
-.glyphicon-chevron-down           { &::before { content: "\e114"; } }
-.glyphicon-retweet                { &::before { content: "\e115"; } }
-.glyphicon-shopping-cart          { &::before { content: "\e116"; } }
-.glyphicon-folder-close           { &::before { content: "\e117"; } }
-.glyphicon-folder-open            { &::before { content: "\e118"; } }
-.glyphicon-resize-vertical        { &::before { content: "\e119"; } }
-.glyphicon-resize-horizontal      { &::before { content: "\e120"; } }
-.glyphicon-hdd                    { &::before { content: "\e121"; } }
-.glyphicon-bullhorn               { &::before { content: "\e122"; } }
-.glyphicon-bell                   { &::before { content: "\e123"; } }
-.glyphicon-certificate            { &::before { content: "\e124"; } }
-.glyphicon-thumbs-up              { &::before { content: "\e125"; } }
-.glyphicon-thumbs-down            { &::before { content: "\e126"; } }
-.glyphicon-hand-right             { &::before { content: "\e127"; } }
-.glyphicon-hand-left              { &::before { content: "\e128"; } }
-.glyphicon-hand-up                { &::before { content: "\e129"; } }
-.glyphicon-hand-down              { &::before { content: "\e130"; } }
-.glyphicon-circle-arrow-right     { &::before { content: "\e131"; } }
-.glyphicon-circle-arrow-left      { &::before { content: "\e132"; } }
-.glyphicon-circle-arrow-up        { &::before { content: "\e133"; } }
-.glyphicon-circle-arrow-down      { &::before { content: "\e134"; } }
-.glyphicon-globe                  { &::before { content: "\e135"; } }
-.glyphicon-wrench                 { &::before { content: "\e136"; } }
-.glyphicon-tasks                  { &::before { content: "\e137"; } }
-.glyphicon-filter                 { &::before { content: "\e138"; } }
-.glyphicon-briefcase              { &::before { content: "\e139"; } }
-.glyphicon-fullscreen             { &::before { content: "\e140"; } }
-.glyphicon-dashboard              { &::before { content: "\e141"; } }
-.glyphicon-paperclip              { &::before { content: "\e142"; } }
-.glyphicon-heart-empty            { &::before { content: "\e143"; } }
-.glyphicon-link                   { &::before { content: "\e144"; } }
-.glyphicon-phone                  { &::before { content: "\e145"; } }
-.glyphicon-pushpin                { &::before { content: "\e146"; } }
-.glyphicon-usd                    { &::before { content: "\e148"; } }
-.glyphicon-gbp                    { &::before { content: "\e149"; } }
-.glyphicon-sort                   { &::before { content: "\e150"; } }
-.glyphicon-sort-by-alphabet       { &::before { content: "\e151"; } }
-.glyphicon-sort-by-alphabet-alt   { &::before { content: "\e152"; } }
-.glyphicon-sort-by-order          { &::before { content: "\e153"; } }
-.glyphicon-sort-by-order-alt      { &::before { content: "\e154"; } }
-.glyphicon-sort-by-attributes     { &::before { content: "\e155"; } }
-.glyphicon-sort-by-attributes-alt { &::before { content: "\e156"; } }
-.glyphicon-unchecked              { &::before { content: "\e157"; } }
-.glyphicon-expand                 { &::before { content: "\e158"; } }
-.glyphicon-collapse-down          { &::before { content: "\e159"; } }
-.glyphicon-collapse-up            { &::before { content: "\e160"; } }
-.glyphicon-log-in                 { &::before { content: "\e161"; } }
-.glyphicon-flash                  { &::before { content: "\e162"; } }
-.glyphicon-log-out                { &::before { content: "\e163"; } }
-.glyphicon-new-window             { &::before { content: "\e164"; } }
-.glyphicon-record                 { &::before { content: "\e165"; } }
-.glyphicon-save                   { &::before { content: "\e166"; } }
-.glyphicon-open                   { &::before { content: "\e167"; } }
-.glyphicon-saved                  { &::before { content: "\e168"; } }
-.glyphicon-import                 { &::before { content: "\e169"; } }
-.glyphicon-export                 { &::before { content: "\e170"; } }
-.glyphicon-send                   { &::before { content: "\e171"; } }
-.glyphicon-floppy-disk            { &::before { content: "\e172"; } }
-.glyphicon-floppy-saved           { &::before { content: "\e173"; } }
-.glyphicon-floppy-remove          { &::before { content: "\e174"; } }
-.glyphicon-floppy-save            { &::before { content: "\e175"; } }
-.glyphicon-floppy-open            { &::before { content: "\e176"; } }
-.glyphicon-credit-card            { &::before { content: "\e177"; } }
-.glyphicon-transfer               { &::before { content: "\e178"; } }
-.glyphicon-cutlery                { &::before { content: "\e179"; } }
-.glyphicon-header                 { &::before { content: "\e180"; } }
-.glyphicon-compressed             { &::before { content: "\e181"; } }
-.glyphicon-earphone               { &::before { content: "\e182"; } }
-.glyphicon-phone-alt              { &::before { content: "\e183"; } }
-.glyphicon-tower                  { &::before { content: "\e184"; } }
-.glyphicon-stats                  { &::before { content: "\e185"; } }
-.glyphicon-sd-video               { &::before { content: "\e186"; } }
-.glyphicon-hd-video               { &::before { content: "\e187"; } }
-.glyphicon-subtitles              { &::before { content: "\e188"; } }
-.glyphicon-sound-stereo           { &::before { content: "\e189"; } }
-.glyphicon-sound-dolby            { &::before { content: "\e190"; } }
-.glyphicon-sound-5-1              { &::before { content: "\e191"; } }
-.glyphicon-sound-6-1              { &::before { content: "\e192"; } }
-.glyphicon-sound-7-1              { &::before { content: "\e193"; } }
-.glyphicon-copyright-mark         { &::before { content: "\e194"; } }
-.glyphicon-registration-mark      { &::before { content: "\e195"; } }
-.glyphicon-cloud-download         { &::before { content: "\e197"; } }
-.glyphicon-cloud-upload           { &::before { content: "\e198"; } }
-.glyphicon-tree-conifer           { &::before { content: "\e199"; } }
-.glyphicon-tree-deciduous         { &::before { content: "\e200"; } }
-.glyphicon-cd                     { &::before { content: "\e201"; } }
-.glyphicon-save-file              { &::before { content: "\e202"; } }
-.glyphicon-open-file              { &::before { content: "\e203"; } }
-.glyphicon-level-up               { &::before { content: "\e204"; } }
-.glyphicon-copy                   { &::before { content: "\e205"; } }
-.glyphicon-paste                  { &::before { content: "\e206"; } }
+.glyphicon-eur                    { &:before { content: "\20ac"; } }
+.glyphicon-minus                  { &:before { content: "\2212"; } }
+.glyphicon-cloud                  { &:before { content: "\2601"; } }
+.glyphicon-envelope               { &:before { content: "\2709"; } }
+.glyphicon-pencil                 { &:before { content: "\270f"; } }
+.glyphicon-glass                  { &:before { content: "\e001"; } }
+.glyphicon-music                  { &:before { content: "\e002"; } }
+.glyphicon-search                 { &:before { content: "\e003"; } }
+.glyphicon-heart                  { &:before { content: "\e005"; } }
+.glyphicon-star                   { &:before { content: "\e006"; } }
+.glyphicon-star-empty             { &:before { content: "\e007"; } }
+.glyphicon-user                   { &:before { content: "\e008"; } }
+.glyphicon-film                   { &:before { content: "\e009"; } }
+.glyphicon-th-large               { &:before { content: "\e010"; } }
+.glyphicon-th                     { &:before { content: "\e011"; } }
+.glyphicon-th-list                { &:before { content: "\e012"; } }
+.glyphicon-ok                     { &:before { content: "\e013"; } }
+.glyphicon-remove                 { &:before { content: "\e014"; } }
+.glyphicon-zoom-in                { &:before { content: "\e015"; } }
+.glyphicon-zoom-out               { &:before { content: "\e016"; } }
+.glyphicon-off                    { &:before { content: "\e017"; } }
+.glyphicon-signal                 { &:before { content: "\e018"; } }
+.glyphicon-cog                    { &:before { content: "\e019"; } }
+.glyphicon-trash                  { &:before { content: "\e020"; } }
+.glyphicon-home                   { &:before { content: "\e021"; } }
+.glyphicon-file                   { &:before { content: "\e022"; } }
+.glyphicon-time                   { &:before { content: "\e023"; } }
+.glyphicon-road                   { &:before { content: "\e024"; } }
+.glyphicon-download-alt           { &:before { content: "\e025"; } }
+.glyphicon-download               { &:before { content: "\e026"; } }
+.glyphicon-upload                 { &:before { content: "\e027"; } }
+.glyphicon-inbox                  { &:before { content: "\e028"; } }
+.glyphicon-play-circle            { &:before { content: "\e029"; } }
+.glyphicon-repeat                 { &:before { content: "\e030"; } }
+.glyphicon-refresh                { &:before { content: "\e031"; } }
+.glyphicon-list-alt               { &:before { content: "\e032"; } }
+.glyphicon-lock                   { &:before { content: "\e033"; } }
+.glyphicon-flag                   { &:before { content: "\e034"; } }
+.glyphicon-headphones             { &:before { content: "\e035"; } }
+.glyphicon-volume-off             { &:before { content: "\e036"; } }
+.glyphicon-volume-down            { &:before { content: "\e037"; } }
+.glyphicon-volume-up              { &:before { content: "\e038"; } }
+.glyphicon-qrcode                 { &:before { content: "\e039"; } }
+.glyphicon-barcode                { &:before { content: "\e040"; } }
+.glyphicon-tag                    { &:before { content: "\e041"; } }
+.glyphicon-tags                   { &:before { content: "\e042"; } }
+.glyphicon-book                   { &:before { content: "\e043"; } }
+.glyphicon-bookmark               { &:before { content: "\e044"; } }
+.glyphicon-print                  { &:before { content: "\e045"; } }
+.glyphicon-camera                 { &:before { content: "\e046"; } }
+.glyphicon-font                   { &:before { content: "\e047"; } }
+.glyphicon-bold                   { &:before { content: "\e048"; } }
+.glyphicon-italic                 { &:before { content: "\e049"; } }
+.glyphicon-text-height            { &:before { content: "\e050"; } }
+.glyphicon-text-width             { &:before { content: "\e051"; } }
+.glyphicon-align-left             { &:before { content: "\e052"; } }
+.glyphicon-align-center           { &:before { content: "\e053"; } }
+.glyphicon-align-right            { &:before { content: "\e054"; } }
+.glyphicon-align-justify          { &:before { content: "\e055"; } }
+.glyphicon-list                   { &:before { content: "\e056"; } }
+.glyphicon-indent-left            { &:before { content: "\e057"; } }
+.glyphicon-indent-right           { &:before { content: "\e058"; } }
+.glyphicon-facetime-video         { &:before { content: "\e059"; } }
+.glyphicon-picture                { &:before { content: "\e060"; } }
+.glyphicon-map-marker             { &:before { content: "\e062"; } }
+.glyphicon-adjust                 { &:before { content: "\e063"; } }
+.glyphicon-tint                   { &:before { content: "\e064"; } }
+.glyphicon-edit                   { &:before { content: "\e065"; } }
+.glyphicon-share                  { &:before { content: "\e066"; } }
+.glyphicon-check                  { &:before { content: "\e067"; } }
+.glyphicon-move                   { &:before { content: "\e068"; } }
+.glyphicon-step-backward          { &:before { content: "\e069"; } }
+.glyphicon-fast-backward          { &:before { content: "\e070"; } }
+.glyphicon-backward               { &:before { content: "\e071"; } }
+.glyphicon-play                   { &:before { content: "\e072"; } }
+.glyphicon-pause                  { &:before { content: "\e073"; } }
+.glyphicon-stop                   { &:before { content: "\e074"; } }
+.glyphicon-forward                { &:before { content: "\e075"; } }
+.glyphicon-fast-forward           { &:before { content: "\e076"; } }
+.glyphicon-step-forward           { &:before { content: "\e077"; } }
+.glyphicon-eject                  { &:before { content: "\e078"; } }
+.glyphicon-chevron-left           { &:before { content: "\e079"; } }
+.glyphicon-chevron-right          { &:before { content: "\e080"; } }
+.glyphicon-plus-sign              { &:before { content: "\e081"; } }
+.glyphicon-minus-sign             { &:before { content: "\e082"; } }
+.glyphicon-remove-sign            { &:before { content: "\e083"; } }
+.glyphicon-ok-sign                { &:before { content: "\e084"; } }
+.glyphicon-question-sign          { &:before { content: "\e085"; } }
+.glyphicon-info-sign              { &:before { content: "\e086"; } }
+.glyphicon-screenshot             { &:before { content: "\e087"; } }
+.glyphicon-remove-circle          { &:before { content: "\e088"; } }
+.glyphicon-ok-circle              { &:before { content: "\e089"; } }
+.glyphicon-ban-circle             { &:before { content: "\e090"; } }
+.glyphicon-arrow-left             { &:before { content: "\e091"; } }
+.glyphicon-arrow-right            { &:before { content: "\e092"; } }
+.glyphicon-arrow-up               { &:before { content: "\e093"; } }
+.glyphicon-arrow-down             { &:before { content: "\e094"; } }
+.glyphicon-share-alt              { &:before { content: "\e095"; } }
+.glyphicon-resize-full            { &:before { content: "\e096"; } }
+.glyphicon-resize-small           { &:before { content: "\e097"; } }
+.glyphicon-exclamation-sign       { &:before { content: "\e101"; } }
+.glyphicon-gift                   { &:before { content: "\e102"; } }
+.glyphicon-leaf                   { &:before { content: "\e103"; } }
+.glyphicon-fire                   { &:before { content: "\e104"; } }
+.glyphicon-eye-open               { &:before { content: "\e105"; } }
+.glyphicon-eye-close              { &:before { content: "\e106"; } }
+.glyphicon-warning-sign           { &:before { content: "\e107"; } }
+.glyphicon-plane                  { &:before { content: "\e108"; } }
+.glyphicon-calendar               { &:before { content: "\e109"; } }
+.glyphicon-random                 { &:before { content: "\e110"; } }
+.glyphicon-comment                { &:before { content: "\e111"; } }
+.glyphicon-magnet                 { &:before { content: "\e112"; } }
+.glyphicon-chevron-up             { &:before { content: "\e113"; } }
+.glyphicon-chevron-down           { &:before { content: "\e114"; } }
+.glyphicon-retweet                { &:before { content: "\e115"; } }
+.glyphicon-shopping-cart          { &:before { content: "\e116"; } }
+.glyphicon-folder-close           { &:before { content: "\e117"; } }
+.glyphicon-folder-open            { &:before { content: "\e118"; } }
+.glyphicon-resize-vertical        { &:before { content: "\e119"; } }
+.glyphicon-resize-horizontal      { &:before { content: "\e120"; } }
+.glyphicon-hdd                    { &:before { content: "\e121"; } }
+.glyphicon-bullhorn               { &:before { content: "\e122"; } }
+.glyphicon-bell                   { &:before { content: "\e123"; } }
+.glyphicon-certificate            { &:before { content: "\e124"; } }
+.glyphicon-thumbs-up              { &:before { content: "\e125"; } }
+.glyphicon-thumbs-down            { &:before { content: "\e126"; } }
+.glyphicon-hand-right             { &:before { content: "\e127"; } }
+.glyphicon-hand-left              { &:before { content: "\e128"; } }
+.glyphicon-hand-up                { &:before { content: "\e129"; } }
+.glyphicon-hand-down              { &:before { content: "\e130"; } }
+.glyphicon-circle-arrow-right     { &:before { content: "\e131"; } }
+.glyphicon-circle-arrow-left      { &:before { content: "\e132"; } }
+.glyphicon-circle-arrow-up        { &:before { content: "\e133"; } }
+.glyphicon-circle-arrow-down      { &:before { content: "\e134"; } }
+.glyphicon-globe                  { &:before { content: "\e135"; } }
+.glyphicon-wrench                 { &:before { content: "\e136"; } }
+.glyphicon-tasks                  { &:before { content: "\e137"; } }
+.glyphicon-filter                 { &:before { content: "\e138"; } }
+.glyphicon-briefcase              { &:before { content: "\e139"; } }
+.glyphicon-fullscreen             { &:before { content: "\e140"; } }
+.glyphicon-dashboard              { &:before { content: "\e141"; } }
+.glyphicon-paperclip              { &:before { content: "\e142"; } }
+.glyphicon-heart-empty            { &:before { content: "\e143"; } }
+.glyphicon-link                   { &:before { content: "\e144"; } }
+.glyphicon-phone                  { &:before { content: "\e145"; } }
+.glyphicon-pushpin                { &:before { content: "\e146"; } }
+.glyphicon-usd                    { &:before { content: "\e148"; } }
+.glyphicon-gbp                    { &:before { content: "\e149"; } }
+.glyphicon-sort                   { &:before { content: "\e150"; } }
+.glyphicon-sort-by-alphabet       { &:before { content: "\e151"; } }
+.glyphicon-sort-by-alphabet-alt   { &:before { content: "\e152"; } }
+.glyphicon-sort-by-order          { &:before { content: "\e153"; } }
+.glyphicon-sort-by-order-alt      { &:before { content: "\e154"; } }
+.glyphicon-sort-by-attributes     { &:before { content: "\e155"; } }
+.glyphicon-sort-by-attributes-alt { &:before { content: "\e156"; } }
+.glyphicon-unchecked              { &:before { content: "\e157"; } }
+.glyphicon-expand                 { &:before { content: "\e158"; } }
+.glyphicon-collapse-down          { &:before { content: "\e159"; } }
+.glyphicon-collapse-up            { &:before { content: "\e160"; } }
+.glyphicon-log-in                 { &:before { content: "\e161"; } }
+.glyphicon-flash                  { &:before { content: "\e162"; } }
+.glyphicon-log-out                { &:before { content: "\e163"; } }
+.glyphicon-new-window             { &:before { content: "\e164"; } }
+.glyphicon-record                 { &:before { content: "\e165"; } }
+.glyphicon-save                   { &:before { content: "\e166"; } }
+.glyphicon-open                   { &:before { content: "\e167"; } }
+.glyphicon-saved                  { &:before { content: "\e168"; } }
+.glyphicon-import                 { &:before { content: "\e169"; } }
+.glyphicon-export                 { &:before { content: "\e170"; } }
+.glyphicon-send                   { &:before { content: "\e171"; } }
+.glyphicon-floppy-disk            { &:before { content: "\e172"; } }
+.glyphicon-floppy-saved           { &:before { content: "\e173"; } }
+.glyphicon-floppy-remove          { &:before { content: "\e174"; } }
+.glyphicon-floppy-save            { &:before { content: "\e175"; } }
+.glyphicon-floppy-open            { &:before { content: "\e176"; } }
+.glyphicon-credit-card            { &:before { content: "\e177"; } }
+.glyphicon-transfer               { &:before { content: "\e178"; } }
+.glyphicon-cutlery                { &:before { content: "\e179"; } }
+.glyphicon-header                 { &:before { content: "\e180"; } }
+.glyphicon-compressed             { &:before { content: "\e181"; } }
+.glyphicon-earphone               { &:before { content: "\e182"; } }
+.glyphicon-phone-alt              { &:before { content: "\e183"; } }
+.glyphicon-tower                  { &:before { content: "\e184"; } }
+.glyphicon-stats                  { &:before { content: "\e185"; } }
+.glyphicon-sd-video               { &:before { content: "\e186"; } }
+.glyphicon-hd-video               { &:before { content: "\e187"; } }
+.glyphicon-subtitles              { &:before { content: "\e188"; } }
+.glyphicon-sound-stereo           { &:before { content: "\e189"; } }
+.glyphicon-sound-dolby            { &:before { content: "\e190"; } }
+.glyphicon-sound-5-1              { &:before { content: "\e191"; } }
+.glyphicon-sound-6-1              { &:before { content: "\e192"; } }
+.glyphicon-sound-7-1              { &:before { content: "\e193"; } }
+.glyphicon-copyright-mark         { &:before { content: "\e194"; } }
+.glyphicon-registration-mark      { &:before { content: "\e195"; } }
+.glyphicon-cloud-download         { &:before { content: "\e197"; } }
+.glyphicon-cloud-upload           { &:before { content: "\e198"; } }
+.glyphicon-tree-conifer           { &:before { content: "\e199"; } }
+.glyphicon-tree-deciduous         { &:before { content: "\e200"; } }
+.glyphicon-cd                     { &:before { content: "\e201"; } }
+.glyphicon-save-file              { &:before { content: "\e202"; } }
+.glyphicon-open-file              { &:before { content: "\e203"; } }
+.glyphicon-level-up               { &:before { content: "\e204"; } }
+.glyphicon-copy                   { &:before { content: "\e205"; } }
+.glyphicon-paste                  { &:before { content: "\e206"; } }
 // The following 2 Glyphicons are omitted for the time being because
 // they currently use Unicode codepoints that are outside the
 // Basic Multilingual Plane (BMP). Older buggy versions of WebKit can't handle
 // non-BMP codepoints in CSS string escapes, and thus can't display these two icons.
 // Notably, the bug affects some older versions of the Android Browser.
 // More info: https://github.com/twbs/bootstrap/issues/10106
-// .glyphicon-door                   { &::before { content: "\1f6aa"; } }
-// .glyphicon-key                    { &::before { content: "\1f511"; } }
-.glyphicon-alert                  { &::before { content: "\e209"; } }
-.glyphicon-equalizer              { &::before { content: "\e210"; } }
-.glyphicon-king                   { &::before { content: "\e211"; } }
-.glyphicon-queen                  { &::before { content: "\e212"; } }
-.glyphicon-pawn                   { &::before { content: "\e213"; } }
-.glyphicon-bishop                 { &::before { content: "\e214"; } }
-.glyphicon-knight                 { &::before { content: "\e215"; } }
-.glyphicon-baby-formula           { &::before { content: "\e216"; } }
-.glyphicon-tent                   { &::before { content: "\26fa"; } }
-.glyphicon-blackboard             { &::before { content: "\e218"; } }
-.glyphicon-bed                    { &::before { content: "\e219"; } }
-.glyphicon-apple                  { &::before { content: "\f8ff"; } }
-.glyphicon-erase                  { &::before { content: "\e221"; } }
-.glyphicon-hourglass              { &::before { content: "\231b"; } }
-.glyphicon-lamp                   { &::before { content: "\e223"; } }
-.glyphicon-duplicate              { &::before { content: "\e224"; } }
-.glyphicon-piggy-bank             { &::before { content: "\e225"; } }
-.glyphicon-scissors               { &::before { content: "\e226"; } }
-.glyphicon-bitcoin                { &::before { content: "\e227"; } }
-.glyphicon-btc                    { &::before { content: "\e227"; } }
-.glyphicon-xbt                    { &::before { content: "\e227"; } }
-.glyphicon-yen                    { &::before { content: "\00a5"; } }
-.glyphicon-jpy                    { &::before { content: "\00a5"; } }
-.glyphicon-ruble                  { &::before { content: "\20bd"; } }
-.glyphicon-rub                    { &::before { content: "\20bd"; } }
-.glyphicon-scale                  { &::before { content: "\e230"; } }
-.glyphicon-ice-lolly              { &::before { content: "\e231"; } }
-.glyphicon-ice-lolly-tasted       { &::before { content: "\e232"; } }
-.glyphicon-education              { &::before { content: "\e233"; } }
-.glyphicon-option-horizontal      { &::before { content: "\e234"; } }
-.glyphicon-option-vertical        { &::before { content: "\e235"; } }
-.glyphicon-menu-hamburger         { &::before { content: "\e236"; } }
-.glyphicon-modal-window           { &::before { content: "\e237"; } }
-.glyphicon-oil                    { &::before { content: "\e238"; } }
-.glyphicon-grain                  { &::before { content: "\e239"; } }
-.glyphicon-sunglasses             { &::before { content: "\e240"; } }
-.glyphicon-text-size              { &::before { content: "\e241"; } }
-.glyphicon-text-color             { &::before { content: "\e242"; } }
-.glyphicon-text-background        { &::before { content: "\e243"; } }
-.glyphicon-object-align-top       { &::before { content: "\e244"; } }
-.glyphicon-object-align-bottom    { &::before { content: "\e245"; } }
-.glyphicon-object-align-horizontal{ &::before { content: "\e246"; } }
-.glyphicon-object-align-left      { &::before { content: "\e247"; } }
-.glyphicon-object-align-vertical  { &::before { content: "\e248"; } }
-.glyphicon-object-align-right     { &::before { content: "\e249"; } }
-.glyphicon-triangle-right         { &::before { content: "\e250"; } }
-.glyphicon-triangle-left          { &::before { content: "\e251"; } }
-.glyphicon-triangle-bottom        { &::before { content: "\e252"; } }
-.glyphicon-triangle-top           { &::before { content: "\e253"; } }
-.glyphicon-console                { &::before { content: "\e254"; } }
-.glyphicon-superscript            { &::before { content: "\e255"; } }
-.glyphicon-subscript              { &::before { content: "\e256"; } }
-.glyphicon-menu-left              { &::before { content: "\e257"; } }
-.glyphicon-menu-right             { &::before { content: "\e258"; } }
-.glyphicon-menu-down              { &::before { content: "\e259"; } }
-.glyphicon-menu-up                { &::before { content: "\e260"; } }
+// .glyphicon-door                   { &:before { content: "\1f6aa"; } }
+// .glyphicon-key                    { &:before { content: "\1f511"; } }
+.glyphicon-alert                  { &:before { content: "\e209"; } }
+.glyphicon-equalizer              { &:before { content: "\e210"; } }
+.glyphicon-king                   { &:before { content: "\e211"; } }
+.glyphicon-queen                  { &:before { content: "\e212"; } }
+.glyphicon-pawn                   { &:before { content: "\e213"; } }
+.glyphicon-bishop                 { &:before { content: "\e214"; } }
+.glyphicon-knight                 { &:before { content: "\e215"; } }
+.glyphicon-baby-formula           { &:before { content: "\e216"; } }
+.glyphicon-tent                   { &:before { content: "\26fa"; } }
+.glyphicon-blackboard             { &:before { content: "\e218"; } }
+.glyphicon-bed                    { &:before { content: "\e219"; } }
+.glyphicon-apple                  { &:before { content: "\f8ff"; } }
+.glyphicon-erase                  { &:before { content: "\e221"; } }
+.glyphicon-hourglass              { &:before { content: "\231b"; } }
+.glyphicon-lamp                   { &:before { content: "\e223"; } }
+.glyphicon-duplicate              { &:before { content: "\e224"; } }
+.glyphicon-piggy-bank             { &:before { content: "\e225"; } }
+.glyphicon-scissors               { &:before { content: "\e226"; } }
+.glyphicon-bitcoin                { &:before { content: "\e227"; } }
+.glyphicon-btc                    { &:before { content: "\e227"; } }
+.glyphicon-xbt                    { &:before { content: "\e227"; } }
+.glyphicon-yen                    { &:before { content: "\00a5"; } }
+.glyphicon-jpy                    { &:before { content: "\00a5"; } }
+.glyphicon-ruble                  { &:before { content: "\20bd"; } }
+.glyphicon-rub                    { &:before { content: "\20bd"; } }
+.glyphicon-scale                  { &:before { content: "\e230"; } }
+.glyphicon-ice-lolly              { &:before { content: "\e231"; } }
+.glyphicon-ice-lolly-tasted       { &:before { content: "\e232"; } }
+.glyphicon-education              { &:before { content: "\e233"; } }
+.glyphicon-option-horizontal      { &:before { content: "\e234"; } }
+.glyphicon-option-vertical        { &:before { content: "\e235"; } }
+.glyphicon-menu-hamburger         { &:before { content: "\e236"; } }
+.glyphicon-modal-window           { &:before { content: "\e237"; } }
+.glyphicon-oil                    { &:before { content: "\e238"; } }
+.glyphicon-grain                  { &:before { content: "\e239"; } }
+.glyphicon-sunglasses             { &:before { content: "\e240"; } }
+.glyphicon-text-size              { &:before { content: "\e241"; } }
+.glyphicon-text-color             { &:before { content: "\e242"; } }
+.glyphicon-text-background        { &:before { content: "\e243"; } }
+.glyphicon-object-align-top       { &:before { content: "\e244"; } }
+.glyphicon-object-align-bottom    { &:before { content: "\e245"; } }
+.glyphicon-object-align-horizontal{ &:before { content: "\e246"; } }
+.glyphicon-object-align-left      { &:before { content: "\e247"; } }
+.glyphicon-object-align-vertical  { &:before { content: "\e248"; } }
+.glyphicon-object-align-right     { &:before { content: "\e249"; } }
+.glyphicon-triangle-right         { &:before { content: "\e250"; } }
+.glyphicon-triangle-left          { &:before { content: "\e251"; } }
+.glyphicon-triangle-bottom        { &:before { content: "\e252"; } }
+.glyphicon-triangle-top           { &:before { content: "\e253"; } }
+.glyphicon-console                { &:before { content: "\e254"; } }
+.glyphicon-superscript            { &:before { content: "\e255"; } }
+.glyphicon-subscript              { &:before { content: "\e256"; } }
+.glyphicon-menu-left              { &:before { content: "\e257"; } }
+.glyphicon-menu-right             { &:before { content: "\e258"; } }
+.glyphicon-menu-down              { &:before { content: "\e259"; } }
+.glyphicon-menu-up                { &:before { content: "\e260"; } }
diff --git a/assets/stylesheets/bootstrap/_navbar.scss b/assets/stylesheets/bootstrap/_navbar.scss
index c36ba00b46..5d9093a93c 100644
--- a/assets/stylesheets/bootstrap/_navbar.scss
+++ b/assets/stylesheets/bootstrap/_navbar.scss
@@ -96,6 +96,27 @@
       max-height: 200px;
     }
   }
+
+  // Fix the top/bottom navbars when screen real estate supports it
+  position: fixed;
+  right: 0;
+  left: 0;
+  z-index: $zindex-navbar-fixed;
+
+  // Undo the rounded corners
+  @media (min-width: $grid-float-breakpoint) {
+    border-radius: 0;
+  }
+}
+
+.navbar-fixed-top {
+  top: 0;
+  border-width: 0 0 1px;
+}
+.navbar-fixed-bottom {
+  bottom: 0;
+  margin-bottom: 0; // override .navbar defaults
+  border-width: 1px 0 0;
 }
 
 
@@ -134,29 +155,6 @@
   }
 }
 
-// Fix the top/bottom navbars when screen real estate supports it
-.navbar-fixed-top,
-.navbar-fixed-bottom {
-  position: fixed;
-  right: 0;
-  left: 0;
-  z-index: $zindex-navbar-fixed;
-
-  // Undo the rounded corners
-  @media (min-width: $grid-float-breakpoint) {
-    border-radius: 0;
-  }
-}
-.navbar-fixed-top {
-  top: 0;
-  border-width: 0 0 1px;
-}
-.navbar-fixed-bottom {
-  bottom: 0;
-  margin-bottom: 0; // override .navbar defaults
-  border-width: 1px 0 0;
-}
-
 
 // Brand/project name
 
@@ -437,26 +435,8 @@
         background-color: $navbar-default-link-disabled-bg;
       }
     }
-  }
-
-  .navbar-toggle {
-    border-color: $navbar-default-toggle-border-color;
-    &:hover,
-    &:focus {
-      background-color: $navbar-default-toggle-hover-bg;
-    }
-    .icon-bar {
-      background-color: $navbar-default-toggle-icon-bar-bg;
-    }
-  }
-
-  .navbar-collapse,
-  .navbar-form {
-    border-color: $navbar-default-border;
-  }
 
-  // Dropdown menu items
-  .navbar-nav {
+    // Dropdown menu items
     // Remove background color from open dropdown
     > .open > a {
       &,
@@ -498,6 +478,22 @@
     }
   }
 
+  .navbar-toggle {
+    border-color: $navbar-default-toggle-border-color;
+    &:hover,
+    &:focus {
+      background-color: $navbar-default-toggle-hover-bg;
+    }
+    .icon-bar {
+      background-color: $navbar-default-toggle-icon-bar-bg;
+    }
+  }
+
+  .navbar-collapse,
+  .navbar-form {
+    border-color: $navbar-default-border;
+  }
+
 
   // Links in navbars
   //
@@ -571,27 +567,8 @@
         background-color: $navbar-inverse-link-disabled-bg;
       }
     }
-  }
-
-  // Darken the responsive nav toggle
-  .navbar-toggle {
-    border-color: $navbar-inverse-toggle-border-color;
-    &:hover,
-    &:focus {
-      background-color: $navbar-inverse-toggle-hover-bg;
-    }
-    .icon-bar {
-      background-color: $navbar-inverse-toggle-icon-bar-bg;
-    }
-  }
-
-  .navbar-collapse,
-  .navbar-form {
-    border-color: darken($navbar-inverse-bg, 7%);
-  }
 
-  // Dropdowns
-  .navbar-nav {
+    // Dropdowns
     > .open > a {
       &,
       &:hover,
@@ -638,6 +615,23 @@
     }
   }
 
+  // Darken the responsive nav toggle
+  .navbar-toggle {
+    border-color: $navbar-inverse-toggle-border-color;
+    &:hover,
+    &:focus {
+      background-color: $navbar-inverse-toggle-hover-bg;
+    }
+    .icon-bar {
+      background-color: $navbar-inverse-toggle-icon-bar-bg;
+    }
+  }
+
+  .navbar-collapse,
+  .navbar-form {
+    border-color: darken($navbar-inverse-bg, 7%);
+  }
+
   .navbar-link {
     color: $navbar-inverse-link-color;
     &:hover {
diff --git a/assets/stylesheets/bootstrap/_normalize.scss b/assets/stylesheets/bootstrap/_normalize.scss
index 9dddf73ad2..7850b9a41e 100644
--- a/assets/stylesheets/bootstrap/_normalize.scss
+++ b/assets/stylesheets/bootstrap/_normalize.scss
@@ -104,11 +104,14 @@ a:hover {
 // ==========================================================================
 
 //
-// Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+// 1. Remove the bottom border in Chrome 57- and Firefox 39-.
+// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
 //
 
 abbr[title] {
-  border-bottom: 1px dotted;
+  border-bottom: none; // 1
+  text-decoration: underline; // 2
+  text-decoration: underline dotted; // 2
 }
 
 //
diff --git a/assets/stylesheets/bootstrap/_popovers.scss b/assets/stylesheets/bootstrap/_popovers.scss
index 8fb05eae9b..6f83842280 100644
--- a/assets/stylesheets/bootstrap/_popovers.scss
+++ b/assets/stylesheets/bootstrap/_popovers.scss
@@ -29,12 +29,12 @@
   &.left { margin-left: -$popover-arrow-width; }
 
   // Arrows
-  // .arrow is outer, .arrow::after is inner
+  // .arrow is outer, .arrow:after is inner
   > .arrow {
     border-width: $popover-arrow-outer-width;
 
     &,
-    &::after {
+    &:after {
       position: absolute;
       display: block;
       width: 0;
@@ -43,27 +43,12 @@
       border-style: solid;
     }
 
-    &::after {
+    &:after {
       content: "";
       border-width: $popover-arrow-width;
     }
   }
-}
-
-.popover-title {
-  padding: 8px 14px;
-  margin: 0; // reset heading margin
-  font-size: $font-size-base;
-  background-color: $popover-title-bg;
-  border-bottom: 1px solid darken($popover-title-bg, 5%);
-  border-radius: ($border-radius-large - 1) ($border-radius-large - 1) 0 0;
-}
-
-.popover-content {
-  padding: 9px 14px;
-}
 
-.popover {
   &.top > .arrow {
     bottom: -$popover-arrow-outer-width;
     left: 50%;
@@ -71,7 +56,7 @@
     border-top-color: $popover-arrow-outer-fallback-color; // IE8 fallback
     border-top-color: $popover-arrow-outer-color;
     border-bottom-width: 0;
-    &::after {
+    &:after {
       bottom: 1px;
       margin-left: -$popover-arrow-width;
       content: " ";
@@ -86,7 +71,7 @@
     border-right-color: $popover-arrow-outer-fallback-color; // IE8 fallback
     border-right-color: $popover-arrow-outer-color;
     border-left-width: 0;
-    &::after {
+    &:after {
       bottom: -$popover-arrow-width;
       left: 1px;
       content: " ";
@@ -101,7 +86,7 @@
     border-top-width: 0;
     border-bottom-color: $popover-arrow-outer-fallback-color; // IE8 fallback
     border-bottom-color: $popover-arrow-outer-color;
-    &::after {
+    &:after {
       top: 1px;
       margin-left: -$popover-arrow-width;
       content: " ";
@@ -117,7 +102,7 @@
     border-right-width: 0;
     border-left-color: $popover-arrow-outer-fallback-color; // IE8 fallback
     border-left-color: $popover-arrow-outer-color;
-    &::after {
+    &:after {
       right: 1px;
       bottom: -$popover-arrow-width;
       content: " ";
@@ -126,3 +111,16 @@
     }
   }
 }
+
+.popover-title {
+  padding: 8px 14px;
+  margin: 0; // reset heading margin
+  font-size: $font-size-base;
+  background-color: $popover-title-bg;
+  border-bottom: 1px solid darken($popover-title-bg, 5%);
+  border-radius: ($border-radius-large - 1) ($border-radius-large - 1) 0 0;
+}
+
+.popover-content {
+  padding: 9px 14px;
+}
diff --git a/assets/stylesheets/bootstrap/_print.scss b/assets/stylesheets/bootstrap/_print.scss
index 8798d6753a..564f304dd6 100644
--- a/assets/stylesheets/bootstrap/_print.scss
+++ b/assets/stylesheets/bootstrap/_print.scss
@@ -7,8 +7,8 @@
 
 @media print {
   *,
-  *::before,
-  *::after {
+  *:before,
+  *:after {
     color: #000 !important; // Black prints faster: h5bp.com/s
     text-shadow: none !important;
     background: transparent !important;
@@ -20,18 +20,18 @@
     text-decoration: underline;
   }
 
-  a[href]::after {
+  a[href]:after {
     content: " (" attr(href) ")";
   }
 
-  abbr[title]::after {
+  abbr[title]:after {
     content: " (" attr(title) ")";
   }
 
   // Don't show links that are fragment identifiers,
   // or use the `javascript:` pseudo protocol
-  a[href^="#"]::after,
-  a[href^="javascript:"]::after {
+  a[href^="#"]:after,
+  a[href^="javascript:"]:after {
     content: "";
   }
 
diff --git a/assets/stylesheets/bootstrap/_responsive-utilities.scss b/assets/stylesheets/bootstrap/_responsive-utilities.scss
index f3f0c839be..73641aae7f 100644
--- a/assets/stylesheets/bootstrap/_responsive-utilities.scss
+++ b/assets/stylesheets/bootstrap/_responsive-utilities.scss
@@ -14,9 +14,9 @@
 // For more information, see the following:
 //
 // Issue: https://github.com/twbs/bootstrap/issues/10497
-// Docs: http://getbootstrap.com/getting-started/#support-ie10-width
-// Source: http://timkadlec.com/2013/01/windows-phone-8-and-device-width/
-// Source: http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/
+// Docs: https://getbootstrap.com/docs/3.4/getting-started/#support-ie10-width
+// Source: https://timkadlec.com/2013/01/windows-phone-8-and-device-width/
+// Source: https://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/
 
 @at-root {
   @-ms-viewport {
diff --git a/assets/stylesheets/bootstrap/_scaffolding.scss b/assets/stylesheets/bootstrap/_scaffolding.scss
index ed86df1224..7fda593848 100644
--- a/assets/stylesheets/bootstrap/_scaffolding.scss
+++ b/assets/stylesheets/bootstrap/_scaffolding.scss
@@ -7,12 +7,12 @@
 //
 // Heads up! This reset may cause conflicts with some third-party widgets.
 // For recommendations on resolving such conflicts, see
-// http://getbootstrap.com/getting-started/#third-box-sizing
+// https://getbootstrap.com/docs/3.4/getting-started/#third-box-sizing
 * {
   @include box-sizing(border-box);
 }
-*::before,
-*::after {
+*:before,
+*:after {
   @include box-sizing(border-box);
 }
 
@@ -120,7 +120,7 @@ hr {
 
 // Only display content to screen readers
 //
-// See: http://a11yproject.com/posts/how-to-hide-content
+// See: https://a11yproject.com/posts/how-to-hide-content
 
 .sr-only {
   position: absolute;
@@ -134,7 +134,7 @@ hr {
 }
 
 // Use in conjunction with .sr-only to only display content when it's focused.
-// Useful for "Skip to main content" links; see http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
+// Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
 // Credit: HTML5 Boilerplate
 
 .sr-only-focusable {
diff --git a/assets/stylesheets/bootstrap/_theme.scss b/assets/stylesheets/bootstrap/_theme.scss
index 9c2a76cd52..468357d9f1 100644
--- a/assets/stylesheets/bootstrap/_theme.scss
+++ b/assets/stylesheets/bootstrap/_theme.scss
@@ -1,6 +1,6 @@
 /*!
- * Bootstrap v3.4.0 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+ * Bootstrap v3.4.0 (https://getbootstrap.com/)
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/assets/stylesheets/bootstrap/_tooltip.scss b/assets/stylesheets/bootstrap/_tooltip.scss
index 69253390b5..fa69a81ece 100644
--- a/assets/stylesheets/bootstrap/_tooltip.scss
+++ b/assets/stylesheets/bootstrap/_tooltip.scss
@@ -32,28 +32,8 @@
     padding: 0 $tooltip-arrow-width;
     margin-left: -3px;
   }
-}
-
-// Wrapper for the tooltip content
-.tooltip-inner {
-  max-width: $tooltip-max-width;
-  padding: 3px 8px;
-  color: $tooltip-color;
-  text-align: center;
-  background-color: $tooltip-bg;
-  border-radius: $border-radius-base;
-}
 
-// Arrows
-.tooltip-arrow {
-  position: absolute;
-  width: 0;
-  height: 0;
-  border-color: transparent;
-  border-style: solid;
-}
-// Note: Deprecated .top-left, .top-right, .bottom-left, and .bottom-right as of v3.3.1
-.tooltip {
+  // Note: Deprecated .top-left, .top-right, .bottom-left, and .bottom-right as of v3.3.1
   &.top .tooltip-arrow {
     bottom: 0;
     left: 50%;
@@ -111,3 +91,22 @@
     border-bottom-color: $tooltip-arrow-color;
   }
 }
+
+// Wrapper for the tooltip content
+.tooltip-inner {
+  max-width: $tooltip-max-width;
+  padding: 3px 8px;
+  color: $tooltip-color;
+  text-align: center;
+  background-color: $tooltip-bg;
+  border-radius: $border-radius-base;
+}
+
+// Arrows
+.tooltip-arrow {
+  position: absolute;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
diff --git a/assets/stylesheets/bootstrap/_type.scss b/assets/stylesheets/bootstrap/_type.scss
index 8668269cad..c63cc4c071 100644
--- a/assets/stylesheets/bootstrap/_type.scss
+++ b/assets/stylesheets/bootstrap/_type.scss
@@ -225,6 +225,13 @@ dd {
 // Misc
 // -------------------------
 
+// Abbreviations and acronyms
+// Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
+abbr[title],
+abbr[data-original-title] {
+  cursor: help;
+}
+
 .initialism {
   font-size: 90%;
   @extend .text-uppercase;
@@ -255,7 +262,7 @@ blockquote {
     line-height: $line-height-base;
     color: $blockquote-small-color;
 
-    &::before {
+    &:before {
       content: "\2014 \00A0"; // em dash, nbsp
     }
   }
@@ -276,8 +283,8 @@ blockquote.pull-right {
   footer,
   small,
   .small {
-    &::before { content: ""; }
-    &::after {
+    &:before { content: ""; }
+    &:after {
       content: "\00A0 \2014"; // nbsp, em dash
     }
   }
diff --git a/assets/stylesheets/bootstrap/mixins/_clearfix.scss b/assets/stylesheets/bootstrap/mixins/_clearfix.scss
index 31dda0b297..e45eca50ea 100644
--- a/assets/stylesheets/bootstrap/mixins/_clearfix.scss
+++ b/assets/stylesheets/bootstrap/mixins/_clearfix.scss
@@ -6,17 +6,17 @@
 //    Otherwise it causes space to appear at the top and bottom of elements
 //    that are clearfixed.
 // 2. The use of `table` rather than `block` is only necessary if using
-//    `::before` to contain the top-margins of child elements.
+//    `:before` to contain the top-margins of child elements.
 //
 // Source: http://nicolasgallagher.com/micro-clearfix-hack/
 
 @mixin clearfix() {
-  &::before,
-  &::after {
+  &:before,
+  &:after {
     display: table; // 2
     content: " "; // 1
   }
-  &::after {
+  &:after {
     clear: both;
   }
 }
diff --git a/tasks/converter/less_conversion.rb b/tasks/converter/less_conversion.rb
index b993542823..3e29cc87a2 100644
--- a/tasks/converter/less_conversion.rb
+++ b/tasks/converter/less_conversion.rb
@@ -67,7 +67,7 @@ def process_stylesheet_assets
         log_processing name
         # apply common conversions
         file = convert_less(file)
-        file = replace_all file, %r{// stylelint-disable.*?\n*}, '', optional: true
+        file = replace_all file, %r{// stylelint-disable.*?\n+}, '', optional: true
         if name.start_with?('mixins/')
           file = varargify_mixin_definitions(file, *VARARG_MIXINS)
           %w(responsive-(in)?visibility input-size text-emphasis-variant bg-variant).each do |mixin|