Add trainer page to control points

[SunkenSplash]

This PR adds a trainer page to control points with the following functionality:

• Mark control points as active/inactive
• Train other users on that control point (assigning the trained role defined for that point)
• View the past 50 control logs for that point (the complete history can be seen on the HUMS website)
• All actions are properly logged in the audit log

Accessing this page requires a user to either have the trainer role for that point, the control.points.universalTrainer permission, or be a system user.

To allow trainers to mark control points as active/inactive, inactive control points are now displayed in the idle kiosk view, and to those with trainer access (so that they can mark them back up from the kiosk itself).