Not pulling mr repo on vagrant
Updating person and Dovecot modules
Refactoring Ubuntu hierarchy

- Now manages both 12.04 and 14.04 cleanly
- Moved common packages into Ubuntu as they were apt packages
Ensuring 'andrew' group gets made
Updating mumble; switching to fork of ufw
Using YAML anchors for SSL certificate and key locations
Using hiera_hash with deeper merge for ufw::allows
Testing almost-full Krikkit configuration on Vagrant