WIP: CFD-134 - Changing group permission

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

As far as I can tell. Without weight I got it scrambled:
![selection_388](https://cloud.githubusercontent.com/assets/99186/4898612/a26eace0-6412-11e4-8507-4fa6892e9935.png)