Added comments in the three empty models.py files that are still needed. Adjusted the test runner to add applications corresponding to test labels to INSTALLED_APPS even when they don't have a models module.
* Removed trailing whitespace. * Added newline to EOF if missing. * Removed blank lines at EOF. * Removed some stray tabs.
Aymeric Augustin
Loic Bistuer
Tim Graham
Florian Apolloner