title: Keep table data during Django tests
body: <p>I have some tables containing a lot of data (imported from geonames using django-cities: <a href="https://github.com/coderholic/django-cities" rel="nofollow">https://github.com/coderholic/django-cities</a>) that I want to preserve in tests (since loading them via fixtures will be very slow)… how can I keep those tables and their data during tests?
  I think I have to write a custom TestRunner, but I have no idea about where to start :P</p>