Handle Django static (e.g., admin) media in autoinstallers

[adehnert]

Django 1.4 messed around with this. We should figure out a decent solution. See also -c scripts -i root tonight (ie, 2012-07-01 ~06:00).

To summarize the discussion from zephyr: I think we need to:

1. Set STATIC_ROOT to something sane
2. Set STATIC_URL to something sane
3. Either run collectstatic at install time or make something Awesome that suppresses gathering admin files and redirects serving them to the global copy.