Added some options to the LevelDesign.
Fixed some bugs. We can now save/load levels.
Merge branch 'master' of https://github.com/DionnV/BallZ2D

Conflicts:
	GDD_Game_Windows/GDD_Game_Windows/GDD_Library/Shapes/GDD_Line.cs
	GDD_Game_Windows/GDD_Game_Windows/bin/Debug/GDD_Game_Windows.exe
	GDD_Game_Windows/GDD_Game_Windows/bin/Debug/GDD_Game_Windows.pdb
	GDD_Game_Windows/GDD_Game_Windows/obj/x86/Debug/GDD_Game_Windows.csproj.GenerateResource.Cache
	GDD_Game_Windows/GDD_Game_Windows/obj/x86/Debug/GDD_Game_Windows.exe
	GDD_Game_Windows/GDD_Game_Windows/obj/x86/Debug/GDD_Game_Windows.pdb