supersedes #1038 and kuma-lib #14 with rebasing.
Update Jingo version to 0.6.1.
- Replace all jingo.render calls
- Convert all email templates to Jinja2
- Replace safe_django_forms with jingo.monkey.patch()
- Remove dead code from demos.urls
update vendor submodule with jingo upgrade
Is there something specific we're waiting on before merging this?
Nope, we can merge anytime. We should wait to push until we're on official hours though. ;)