Add config.vm.box_version constraint to Vagrantfile
Filter view name as cmd
Pass a new context object.
re #435 Make use of template functions.
re #435 Changed property name.
Fixed expired method.
re #435 Made groupable behavior more generic.

Renamed to relatable.
re #435 Added groups table object.
re #435 Cleanup.

Relatable behavior takes care of all this.
re #435 Synced with latest model re-factor.
re #435 Synced with latest model re-factor.
re #435 Always join roles.
re #435 Construct the groups array manually.

After the model re-factor, an array of columns cannot be accessed from rowsets anymore.
re #435 Behavior got renamed.
re #435 Changed default role ID.
Merge branch 'develop' into feature/435-groups
Merge branch 'develop' into feature/435-groups