Added caustics, improved the atmosphere shader, improve the solar system generator, improved the water shader

also modified GlobalCore to allow more global infos.
Merge branch 'master' of https://github.com/MrNothing/Infinite-Universe

Conflicts:
	SandBox/SandBox-csharp.sln
	SandBox/SandBox.sln
	SandBox/SandBox.userprefs