Write 'white-list.txt' and 'ops.txt' auth files.

* Add msm-update-auth-lists.py.
* Django admins (is_superuser) are Minecraft ops.
* Django users (is_active) are white-listed players.
Add init.d script for msm-update-auth-lists.
Add msm-update-auth-lists to init.pp to install.
Change definition of Minecraft Ops.

* Now, any "Staff" user in auth_users table is considered
  to be an ops. (Previously, I was querying for "Superusers.")