Major Description
Some REST methods (mostly in UserService and RoleService) are now returning the created / updated / deleted resource in the Response body as entity.
It could be nice to provide a 'Prefer' / 'Preference-Applied' (similar respectively to [1] and [2]) HTTP header mechanism allowing caller to declare that he is not interested in getting the created / updated / deleted resource back, but only in operation result status.
[1] http://msdn.microsoft.com/en-us/library/hh537533.aspx
[2] http://msdn.microsoft.com/en-us/library/hh554623.aspx