Canbanizers/Canban — pull request #92 by WilsonMonkey (2014-05-13 11:17:40+00:00)
Title: Groupmanagement

I will merge this because the branch is oversized and unclear. For the implementation of the complete groupmanagement we have to create a new one next week. Please let me know, if something goes wrong after merging, because some merge-errors occured and I'm not sure if still everything gonna work.