Added checkpoint system for handling current/next checkpoint and goal. AH-248
Move color tone logic. AH-248
Code cleaning. AH-248
Add base for checkpoint arrow. AH-248
Code cleaning, better solution for transparent models. AH-248
Merge remote-tracking branch 'origin/master' into AH_248_checkpoints

Conflicts:
	BoostTest/BoostTest.vcxproj
	Client/Client.vcxproj