Fixed a bug in Staffwho

Fixed a bug that caused Moderator Ozarck to be listed among the admins
in Staffwho().
Also put mentors in a separate category because no modfuckering powers.
Revert "Fixed a bug in Staffwho"

This reverts commit a9bb15d2907bc4de20e84032a7a608dcffc41cf1.
Separated Mentors from Moderators in Staffwho

Because no modfuckering powers.

Also there's a bug where moderator Ozarck is being listed with the
admins, but I can't figure out why.