Started to do some clean-up; added *some* material name setting to help with debugging;
Added names for billboards; fixed a ton of bugs with menus - Z-sorting now ACTUALLY works for 2D sprites; jeez; commented a lot of code I couldn't figure out what was doing at first glance; fixed forwardrendered and the game should now work fine (PlanetHeads); removed ancient coin hack that made the coins look funky - it wasn't needed anymore, and now the coins look fine; lots of minor fixes here and there