Started to implement prelighting. Not working.
Project settings saved
Continued on prelighting but failed yet again. Cool feature though.
Tried with changing some parameters
Yet another attempt to win prelighting
Finally implemented prelighting to work correctly. We can now have as many lights as we want on the terrain.
Refactred the prelight functions to a new class PrelightingRenderer.
Added spotlight model.
Merge branch 'prelight'

Conflicts:
	datx02-rally/datx02-rally/Entities/TerrainModel.cs
	datx02-rally/datx02-rally/Game1.cs
	datx02-rally/datx02-rallyContent/datx02-rallyContent.contentproj