Config refactoring. The app now follows the 12factor model for
configuration. This lead to a horseload of cleanup. It also breaks
running the celeryd worker. You now need to run celery through the
manage.py script instead of celeryd.

   python manage.py celeryworker

Please update your initscripts accordingly.

Also, configuration is now done independently from the repository! You
can deploy directly from this repo :) Please refer to the README.rst
file for more detailed info. Note: If you changed
modelconvert/settings.py: You need to checkout/update your
version of settings.py to the version in this commit.  The settings.py
file is no longer a user-customizable file, instead it handles
configuration mechanism.

Please report any problems. This is a major refactor.