WIP: CFD-134 - Changing group permission

#156 
WIP
![selection_382](https://cloud.githubusercontent.com/assets/99186/4842556/cf25e086-6026-11e4-8afd-607ed72781f7.png)

=> When I create new group titled "My bad hair day new group"

we can remove the linked, and just auto-calculate it on the PHP function.