Shadows are no longer created and used/drawn when shadow is turned off (0 in the config-file.)

Signed-off-by: Strakas <reetopps6@hotmail.com>
Merge branch 'master' of https://github.com/Malow/NDYGFX
Added end of AI grid per terrain with the color black

Signed-off-by: Strakas <reetopps6@hotmail.com>
Merge branch 'master' of https://github.com/Malow/NDYGFX

Conflicts:
	ModelViewer/ModelViewer.cpp

Signed-off-by: Strakas <reetopps6@hotmail.com>