Updates to c# tester application

Updated a few things in the tester application to make it run smoother.
Fixed screen message update issue.
Added all SCA Comms code and required mono Dll files.

MonoDevelop code projects in solution need to be set to Build to
Mono/.Net 4.0 to prevent some errors in LeanTween.

Added SCA Comms code scripts and required mono dll files to support
serialization and service model.

Added GameController GameObject to ResetScene and attached the
GameController script to it.

MainScene can still be run as the current scene in Unity.