/obj/admins is now /datum/admins because that's what datums are for you silly people
Moved var/datum/marked_datum from /obj/ to /datum/admins
admin datums are persistent throughout the round. They are stored in the var/list/admins rather than the ranks. This is so admin preferences may be moved into the datum to have them persist even after Login/Logout/Disconnects.
git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4749 316c924e-a436-60f5-8080-3fe189b3f50e