Bearbeiten von „ProcessWire - CKEditor Tutorial“

Since configuring CKEditor costed me a lot of time in the past and this forum saved me a lot of time, I think it's time to give something back to the community. Here is a short CKEditor Tutorial which covers:
* adding a (useful) plugin to CKEditor
* adding styles to use css3 multicolumn feature and providing the necessary output for frontend and the editor field
* customizing CKEditor Interface