Codemirror mode now correct for c-like langs

Fixes #849

resources/assets/js/services/code.js

@@ -20,13 +20,13 @@ const CodeMirror = require('codemirror');
 
 const modeMap = {
     css: 'css',
-    c: 'clike',
-    java: 'clike',
-    scala: 'clike',
-    kotlin: 'clike',
-    'c++': 'clike',
-    'c#': 'clike',
-    csharp: 'clike',
+    c: 'text/x-csrc',
+    java: 'text/x-java',
+    scala: 'text/x-scala',
+    kotlin: 'text/x-kotlin',
+    'c++': 'text/x-c++src',
+    'c#': 'text/x-csharp',
+    csharp: 'text/x-csharp',
     diff: 'diff',
     go: 'go',
     html: 'htmlmixed',