Added an effect to use blending. Added trees
Added simple diffuse shading to the foliage
Small changes to the ambient light of the trees and changed alpha function again
Implemented normal maps to the tree shader
Merge branch 'foliage'

Conflicts:
	datx02-rally/datx02-rally/Game1.cs
	datx02-rally/datx02-rally/datx02-rally.csproj.Debug.cachefile
	datx02-rally/datx02-rallyContent/datx02-rallyContent.contentproj