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

Resource has permissions :	READ	CREATE	UPDATE	DELETE	Action
ls://dev.artenum.com/projects/keridwen/manager					Edit -  Delete -  (recursive)
ls://dev.artenum.com/projects/keridwen/member					Edit -  Delete -  (recursive)
ls://dev.artenum.com/projects/keridwen/reader					Edit -  Delete -  (recursive)

    (owner has all permissions)