Lighting changes

-- The map now uses the Sprites/Diffuse shader.
-- Doors and Switches use the Shaded Objects material.
-- Lightmeshes now use the Particle/Multiply(Double) shader.
-- The player's Light is now a Spotlight, positioned above the stage.
Merge remote-tracking branch 'origin/master'

Conflicts:
	Assets/Prefabs/Door.prefab
	Assets/Prefabs/Switch.prefab
	Assets/Scenes/Final_Build_Blood.unity
	Assets/Tiled2Unity/Materials/Wall Tiles (1).mat
	Assets/Tiled2Unity/Prefabs/final_map.prefab
	ProjectSettings/TagManager.asset