-Added oxygen deprivation kit.
-Added O2 kit to med supply crate from QM.
-Added O2 kit to medbay.
-Added O2 kit to emergency lockers.
-Changed spawn chances and what items spawn in emergency lockers to something more sensible.
-Changed barman's top hat to allow small items to be stored within.
-Decreased emergency oxygen tank contents to ~100. Can be undone if people get really pissy.
git-svn-id: http://tgstation13.googlecode.com/svn/trunk@702 316c924e-a436-60f5-8080-3fe189b3f50e