Reintroduced stats display, optimized point lights and allowed for forced SD graphics mode

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>
Some lighting improvements, fixed some SD texture issues, updated OtherLights scene to show off a textured light

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>
Removed backgrounds from scene, as they'll be obsolete soon. Updated the testscene with another prop for testing

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>