Removed UserRestrictedModule & tweaked CAS setting

* Removed UserRestrictedModule (and associated models) from the project as it wasn't used (or will not be used)
* Change the settings to make sure the admin of the site is also behind the CAS in production

Fixes #81
7 jobs for !105 with remove/userRestrictedModule in 7 minutes and 24 seconds (queued for 1 second)
merge request