This updates Profile.get_starred_review_groups_count(),

Profile.get_starred_review_requests_count(), and related functions to

avoid factoring in a LocalSite value if Local Sites aren't used in the

deployment.
Most deployments do not use Local Site functionality. By performing this

check, we're able to avoid a JOIN between LocalSite and a starred

object, instead letting us operate on the through tables, just like

when LocalSite.ALL is passed. The vast majority of deployments will

benefit from this improved performance, especially combined with the new

caching.

All unit tests pass.