READ : Allow user to view this Project
CREATE : Allow user to create new resource below this Project
UPDATE : Allow user to edit this Project
DELETE : Allow user to delete this Project

Resource has permissions :	READ	CREATE	UPDATE	DELETE	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)