Admins can now:
Pause event start countdown.
Add/Remove events to rotation.
Affect the likelihood of events occurring.
Allow one shot events to fire again.
Previously missed Z-level checks in the form "z != X". Utilized this regex which hopefully has cought most of them [zZ](\s?)(!?)=(\s?)(\d+).
Adds more Z-level configuration, admin levels.
Made infected vending machines flip their speech switch back to on.
Added a new line for the origin machine, from Rockdtben.
git-svn-id: http://tgstation13.googlecode.com/svn/trunk@5520 316c924e-a436-60f5-8080-3fe189b3f50e
