Check for duplicated DN on user creation
Implement _preModifyUser on LdapUserBase
Change user modification hook from _modifyUser to _preModifyUser

Throw DataExists exception if the user try to rename a user on a
container and already exists
set proper dependency
Merge branch '3.2' into scabrero/samba-improve-user-creation-errors

Conflicts:
	main/samba/ChangeLog
	main/users/ChangeLog
Hide internal groups from the Zarafa's global addressbook
Merge pull request #916 from Zentyal/cperello/hide-system-groups-from-zarafa

Hide internal groups from the Zarafa's global addressbook
Merge branch '3.2' into scabrero/samba-improve-user-creation-errors

Conflicts:
	main/samba/ChangeLog
Merge pull request #892 from Zentyal/scabrero/samba-improve-user-creation-errors

Scabrero/samba improve user creation errors
Remove lock file in EBox::Util::Lock::unlock()
Merge pull request #919 from Zentyal/rduran/multigw-fix

Remove lock file in EBox::Util::Lock::unlock()
Hide openchange service status from the dashboard and linked it status to the one from Samba
Merge pull request #921 from Zentyal/cperello/openchange-hide-from-dashboard

Hide openchange service status from the dashboard and linked it status t...
Merge branch '3.2' into 3.3

Conflicts:
	main/core/ChangeLog
	main/openchange/ChangeLog
	main/samba/ChangeLog
	main/samba/debian/precise/control
	main/samba/src/EBox/SambaLdapUser.pm
	main/users/ChangeLog
	main/zarafa/ChangeLog