new ckeditor 4.1 + codemirror plugin + langs + about

Maybe a little bit early, as ckeditor 4.1 was just released today...

I was trying to make a new package with cke 4.0.3 including the codemirror plugin, but then the 4.0.3 disappear...

Anyway, some features I would like to see in bolt ckeditor:
* codemirror plugin for a really better experience in source mode
* locales (same as bolt, for example)
* the about button