This improves performance of starred review group and review request

counting when using LocalSite.ALL. Since we don't need to filter by

any Profile state in this case, we can simplify things by querying the

through table the starred items, filtering by the Profile's ID.
This is much faster, as we don't need to JOIN any tables and the

database can more easily leverage the existing indexes.
Upcoming changes to use LocalSite.objects.has_local_sites() will allow

us to short-cut the queries further in the common case of no Local

Sites, avoiding the JOINs on the majority of servers.

Unit tests pass.