Revert "Revert "#132: Remove plugin type permissions.""

This reverts commit 4297b560bffd4bcfeed89113bfce06dc59f6f69e.
Revert "Revert "#132: Box controls no longer use the admin functions I made up for boxes.""

This reverts commit 297baa4559fb097d5e291115c981b421be01202c.