Merge pull request #60 from mdenburger/master

Fix Dutch translations
upgraded to codemirror 4.2 + added new bbcode mode
tool always forgets files
Merge branch 'master' of https://github.com/w8tcha/CKEditor-CodeMirror-Plugin
codemirror now works in sourcedialog when editor is in framed mode (fixes #61)
fixed icon names in css file