Use new rest lib (Update receives all columns that need to be updated)

persistence/user_repository.go

@@ -169,8 +169,9 @@ func (r *userRepository) Save(entity interface{}) (string, error) {
 	return u.ID, err
 }
 
-func (r *userRepository) Update(entity interface{}, cols ...string) error {
+func (r *userRepository) Update(id string, entity interface{}, cols ...string) error {
 	u := entity.(*model.User)
+	u.ID = id
 	usr := loggedUser(r.ctx)
 	if !usr.IsAdmin && usr.ID != u.ID {
 		return rest.ErrPermissionDenied