We would like to install django-cms before creating a site.
django-cms imports itself as part of its installation (!)

a bit of a heavy handed fix..?
Fix cache-delete.

Django-cms loops through all active users to delete all the permission
cache when publishing a page. Inststead of doing this, we now delete the
permission cache by deleting all cache entries according to a specified
pattern.
Merge branch 'develop'

Conflicts:
	cms/cache/permissions.py
	setup.py