made material design optional

_includes/head.html

@@ -8,10 +8,11 @@
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@{{ site.fontawesome.version }}/css/all.min.css" integrity="{{ site.fontawesome.integrity }}" crossorigin="anonymous">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/academicons@{{ site.academicons.version }}/css/academicons.min.css" integrity="{{ site.academicons.integrity }}" crossorigin="anonymous">
 
+    {% if site.enable_material_design %}
     <!-- MDBootstrap -->
     <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/mdb-ui-kit@{{ site.mdb.version }}/css/mdb.min.css" integrity="{{ site.mdb.integrity.css }}" crossorigin="anonymous" />
-
+    {% endif %}
 
     <!-- Code Syntax Highlighting -->
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/jwarby/jekyll-pygments-themes@master/{{ site.highlight_theme_light | append: '.css' }}" media="none" id="highlight_theme_light" />
@@ -22,6 +23,7 @@
     {% elsif site.icon != blank %}
     <link rel="shortcut icon" href="{{ site.icon | prepend: '/assets/img/' | relative_url}}"/>
     {% endif %}
+
     <link rel="stylesheet" href="{{ '/assets/css/main.css' | relative_url }}">
     <link rel="canonical" href="{{ page.url | replace:'index.html','' | absolute_url }}">
 

_includes/scripts/bootstrap.html

@@ -1,5 +1,7 @@
 <!-- Bootsrap script -->
   <script src="https://cdn.jsdelivr.net/npm/bootstrap@{{ site.bootstrap.version }}/dist/js/bootstrap.bundle.min.js" integrity="{{ site.bootstrap.integrity.js }}" crossorigin="anonymous"></script>
 
+{% if site.enable_material_design %}
 <!-- MDBootstrap script -->
   <script async src="https://cdn.jsdelivr.net/npm/mdb-ui-kit@{{ site.mdb.version }}/js/mdb.min.js" integrity="{{ site.mdb.integrity.js }}" crossorigin="anonymous"></script>
+{% endif %}