Re-order release notes by what needs doing
Moving getting the current site into a function

This is the first step to removing the dependence on the
sites framework.
This instance only needs the site name, not the domain
More refactoring - no one calls get_site directly now
Remove dependence on Django's sites framework
Add South migrations

It'll make handling ugprades easier if people are using
South.

This change doesn't force South on anyone (it's not in
setup.py).
Add a note about South.