Add CodeMirror themes (eclipse, dracula)

resource/js/components/PageEditor/OptionsSelector.js

@@ -28,7 +28,7 @@ export default class OptionsSelector extends React.Component {
     }
 
     this.availableThemes = [
-      'elegant', 'neo', 'mdn-like', 'material', 'monokai', 'twilight'
+      'eclipse', 'elegant', 'neo', 'mdn-like', 'material', 'dracula', 'monokai', 'twilight'
     ];
     this.keymapModes = {
       default: 'Default',