Admin actions

If one uses the admin site(s), and there is a ModelAdmin for the user model, then the package adds two extra actions to that admin. These actions can log out (normal) users, and all (including admin) users.

For users to work with these actions, they should be a super user (administrator), or have the single_session.logout and single_session.logout_all permissions respectively. We strongly advise not to give a user the single_session.logout_all permission, since that would mean that that user can log out administrator users, and by keeping these logged out, thus prevent administrators to do their job properly.