The test fixtures for users contained a couple items that had relations to

other things that didn't exist (a LocalSiteProfile and a ReviewRequestVisit).

In Django 1.6, loading a fixture with unresolved foreign keys works just fine,

but in 1.8, it throws an error. Because we don't actually use these particular

items in any tests, we can just get rid of them.

Ran unit tests on Django 1.6 and 1.8.