Make it easier for Ross to install on his mangled OSX
First pass at adding CCG information and boundaries.

Currently new relationship adding to each Practice, but I guess this must
be do-able, and should make it easier to provide this info through the API.
Updated CCG API to return the geometry when "geometry" appears in the GET request
Update practices to have a FK to their CCG, and a management command for binding them
Removing unused imports
Merge remote branch 'remotes/openhealthcare/master'

Conflicts:
	nhs/api/views.py
	nhs/settings.py