Moves everything on a 15+ layer to a plane. So now you get screen catcher (-99, was already on a plane), lighting (15), effects that ignore lighting (16), fullscreen UI effects (18), screen objects used to build the UI (19), actual equipment in the UI slots (20), and everything else (0).
Also created a file to contain plane and layer defines for hopeful eventual use.
Hopefully this doesn't change anything now but does enable some nifty new features in the future.
closet.dm, costume.dm, decal.dm and window.dm have been knocked out of the define folder and their defines have been moved into appropriate files.
The closet folder has been re-organized a little.
supplypacks.dm has been moved into the datums folder since that's what it is.
git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4627 316c924e-a436-60f5-8080-3fe189b3f50e
