Menu and game structure

Features:
- Menu
- Loading levels
- Saving game
Merge remote-tracking branch 'origin/master'

Conflicts:
	Prototype/Library/CurrentLayout.dwlt
	Prototype/Library/InspectorExpandedItems.asset
	Prototype/Library/ScriptAssemblies/Assembly-CSharp.dll
	Prototype/Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
	Prototype/Library/assetDatabase3
	Prototype/Library/expandedItems
	Prototype/Library/guidmapper
	Prototype/Library/metadata/58/585a9eb9cb40c3644b3589597c24f47e
	Prototype/Library/metadata/71/71b2fd17db1cbf94096bf8e3debb033f
Removed old files