Added Night theme

Added Night theme (Dark colorset) and modified stylesheets to be dependent on "github.css" and "night.css" (default Typora themes)

persian-night.css

@@ -0,0 +1,81 @@
+@import "night.css";
+@include-when-export "persian/vazir-online.css";
+@include-when-export url(https://fonts.loli.net/css?family=Open+Sans:400italic,700italic,700,400&subset=latin,latin-ext);
+@import "persian/vazir.css";
+@import "persian/opensans.css";
+
+html,
+body,
+button,
+input,
+select,
+textarea {
+    font-family: 'Vazir', "Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,sans-serif;
+}
+
+#write {
+	/* RTL */
+	direction: rtl;
+}
+
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+    font-family: "Vazir", "Lucida Grande", "Corbel", sans-serif;
+	font-weight: bold;
+}
+
+h1:hover a.anchor,
+h2:hover a.anchor,
+h3:hover a.anchor,
+h4:hover a.anchor,
+h5:hover a.anchor,
+h6:hover a.anchor {
+    background: none;
+}
+blockquote {
+	border-left: none;
+    border-right: 4px solid #474d54;
+	margin: 0 1.875rem 1.875rem 0;
+    padding: 0 15px;
+}
+blockquote blockquote {
+    padding: 0 0 0 15px;
+}
+
+.CodeMirror-lines {
+    padding-left: 4px;
+	direction: ltr;
+}
+
+code {
+    padding: 0 4px 2px 4px;
+	direction: ltr;
+}
+
+.md-fences {
+    padding: 0.2em 1em;
+    padding-top: 8px;
+    padding-bottom: 6px;
+}
+
+header, .context-menu, .megamenu-content, footer{
+    font-family: "Vazir", "Segoe UI", "Arial", sans-serif;
+}
+
+
+.md-def-name{
+	direction:ltr;
+}
+.md-def-name:after {
+    content: ']';
+}
+.md-def-split.md-def-f:before{
+	display:inline;
+	font-weight: 400;
+	content:': ';
+}