Whitespace cleanup.

* Removed trailing whitespace.
* Added newline to EOF if missing.
* Removed blank lines at EOF.
* Removed some stray tabs.

tests/distinct_on_fields/tests.py

@@ -114,4 +114,3 @@ class DistinctOnTests(TestCase):
         # distinct + aggregate not allowed
         with self.assertRaises(NotImplementedError):
             Celebrity.objects.distinct('id').aggregate(Max('id'))
-