change editor theme

assets/src/js/app.js

@@ -348,7 +348,7 @@ $(document).on('ready pjax:success', function() {
     if (textarea[0]) {
       options = {
         mode: textarea.data("mode"),
-        theme: 'mdn-like',
+        theme: 'ttcn',
         lineWrapping: true,
         lineNumbers: true,
         scrollbarStyle: null

assets/src/sass/_editor.scss

@@ -34,10 +34,6 @@
   margin-top: 0;
 }
 
-.editor .cm-s-mdn-like.CodeMirror {
-  background: none;
-}
-
 .editor h3 {
   font-size  : 1em;
   margin     : 0 0 .25em;
@@ -207,4 +203,4 @@ input:-ms-input-placeholder {
     overflow  : hidden;
     text-align: center;
   }
-}
+}