Load codemirror and codemirror-spell-checker without script-loader

Signed-off-by: David Mehren <git@herrmehren.de>

public/js/index.js

@@ -1,9 +1,10 @@
 /* eslint-env browser, jquery */
 /* eslint no-console: ["error", { allow: ["warn", "error", "debug"] }] */
-/* global CodeMirror, Cookies, moment, Idle, serverurl,
+/* global Cookies, moment, Idle, serverurl,
    key, Dropbox, ot, hex2rgb, Visibility */
 
 import TurndownService from 'turndown'
+import CodeMirror from 'codemirror/lib/codemirror.js'
 
 import { saveAs } from 'file-saver'
 import randomColor from 'randomcolor'