3D Escape Menu

1. Fixed menu appearing weirdly in spectator view
2. Significantly increased performance
3. Tweaked menu positioning code, directly faces the camera now. (Please leave feedback on this, does it look better when it's slightly offset?)

1. Fixed spectator mode making the menu weird
2. Hopefully fixed skybox issues

1. Readjusted default colors to better font clarity
2. Fixed buttons not using config colors

Initial version.