Changing settings via Django admin interface

I've set up settings.py to pull from the config_settings database table (and push the hardcoded if values aren't there already).

This will allow people to admin some of the server settings (particularly, the file path to the videos) through the Django admin interface, which should be a bit easier.

Note that changes currently require a server restart.

In the near future, I want to have a "comment" field in the config_settings table, and push the comment on what each setting means to that table / admin view.