READ : Allow user to view this Repository
CREATE : Allow user to create new resource below this Repository
UPDATE : Allow user to edit this Repository
DELETE : Allow user to delete this Repository
UPLOAD : Allow user to upload new file in this repository

Resource has permissions :	READ	CREATE	UPDATE	DELETE	UPLOAD	Action
ls://dev.artenum.com/groups/manager						Edit -  Delete -  (recursive)
ls://dev.artenum.com/users/guest						Edit -  Delete -  (recursive)
ls://dev.artenum.com/groups/all						Edit -  Delete -  (recursive)

    (owner has all permissions)