Use render_form in contact form
Don't show hidden fields
Push visible field down.  Move csrf token.
Merge pull request #323 from rapidsms/feature/321-style-contact-form

Feature/321 style contact form
Removed djtables from setup.py
It is still needed for tests, so I added it to the dev requirements file.
Pin versions in setup.py
Merge pull request #325 from rapidsms/remove-djtables

Remove djtables from setup.py
Merge remote-tracking branch 'remotes/origin/release-0.12.0' into 223-registration

Conflicts:
	rapidsms/contrib/registration/templates/registration/contact_form.html

Branch: 223-registration
Refs #223: Merge latest from release-0.12.0; fix url names

Branch: 223-registration