Misc disk manager
- rename g5k-disk-manager to g5k-disk-manager backend
- small fixes in g5k-disk-manager
- allow g5k-users and users to create tap
Prochaines maintenances programmées: lundi 06/05, lundi 03/06, lundi 01/07
Pour plus d'informations: https://doc-si.inria.fr/display/SU/Gitlab