Instance cache
Ruby 1.8.7 compatibilty for instance_cache
Payment Types
Groups
Registrants
Registrations
Site Types
Site Type instances
Revert "Groups"

This reverts commit be329f6c67fcf88517dbdc6d7adf8cedc12103f0.

Conflicts:
	config/routes.rb
Removed bad fixtures
Switched migrations to references
Fixed RV site type id