indent file
Update group icon when type of group changes
better control of mailaias when removing/adding users; it need also to dsicriminate between suers wtih mail and not
using event to have better behaviour in groualias after addition/removal of users
fixed some ui isseus with groupalias
updated cahngelog
Merge pull request #930 from Zentyal/jag/manage-users-fixes

Manage user fixes: update group type icon and better integration of group mail aliases