Added the Solar system generator

Added Async planet loading
Improved all planet shaders view from space
Added GlobalCore.cs
Merge remote-tracking branch 'origin/master'

Conflicts:
	SandBox/Assembly-CSharp-Editor-vs.csproj
	SandBox/Assembly-CSharp-vs.csproj
	SandBox/Assembly-UnityScript-Editor-vs.unityproj
	SandBox/SandBox-csharp.sln
	SandBox/SandBox.sln
	SandBox/SandBox.userprefs