Move to single contact view.  Add sub nav include.  Cleanup URLs.  Force one Connection.
Merge remote-tracking branch 'remotes/origin/bug/306-contact-form' into 223-registration

Conflicts:
	rapidsms/contrib/registration/templates/registration/bulk_form.html
	rapidsms/contrib/registration/templates/registration/contact_form.html
	rapidsms/contrib/registration/templates/registration/dashboard.html
	rapidsms/contrib/registration/urls.py
	rapidsms/contrib/registration/views.py

Branch: 223-registration