Merge pull request #1203 from DarkSir23/test

added Group.visibility (readonly) and Group.setVisibility(<string>) to the Python API
Start of new scripting system.
Merge branch 'test' of https://github.com/kellyelton/OCTGN into test

Conflicts:
	octgnFX/Octgn/Scripting/GameEvents.cs
	octgnFX/Octgn/Scripting/ScriptApi.cs