Include all roles in role hierarchy when Master
Merge pull request #166 from marfillaster/patch-1

Include all roles in role hierarchy when Master
Add a real roles method because of FOSUserBundle
Fix german translation
Update installation instruction from sandbox settings
Can't remove user/group (FOREIGN KEY Constraints)

Added : onDelete CASCADE on both sides of the user/group relation, in order to be able to delete a user having a group or a group having users.
Fix gender administration
Fix translations
Merge branch 'sonata/master'
Merge branch 'master-merge'