Correcy typo.
Add some simple numQueries tests.
Merge branch 'num-query-checking' of https://github.com/mjtamlyn/django-rest-framework
Fix duplicated database queries for paginated lists.

Closes #713.
Use django-filter 0.6a1 and add database query count tests for paginated, filtered lists.
Merge branch 'master' of https://github.com/tomchristie/django-rest-framework