wrote the ip filter
fixed a minor bug with deleting and objects calling prune tree on an empty domain
search work
moved stuff to more appropriate folders
wrote the initial work for finding a free ip address
fixed import paths
fixed bug when new zone is created below an existing one.
soooooo, yeah. vendor-local isn't using submodules

This kind of sucks. When we fix this, checkout django-reversions at the commit 3213992ad1a528980af8f5654798643031a96659