title: South django.db.utils.IntegrityError: django_content_type.name may not be NULL while running unit tests
body: <p>I'm getting this error <code>django.db.utils.IntegrityError: django_content_type.name may not be NULL</code> while running tests via <code>nosetest</code>.</p>
  
  <p>I've done everything as told in south tutorial - initial migration, fake migration etc.
  Running site normally via <code>runserver</code> command works like charm, but while using <code>test</code> command - above error.</p>
  
  <p>Also, In my development enviroment I'm using <code>sqlite</code> database and I'm using django-nose as test runner (at the very end of <code>INSTALLED_APPS</code>.</p>
  
  <p>Any clues?</p>