Demo Clean-up/Enhancements

-Cleaned up demos - removed a temp VS studio project I had in there and
some other re-arranging and clean up on the demos.
-Moved code out of JSO.Model.Player into JSO.Model.Actor.  I had
previously moved the angularImpulse and velocityNormal logic in the
Player class for performance reasons - so the logic only ran for the
player - but (and I knew this when I did it) it is really needed by more
than just the player.  Luckily other recent optimizations have made it
so this move has a negligible impact on performance.  Also some slight
adjustments related in JSO.Model.Object
-Added new attributes to JSO.Model.Actor: goalStyle,
goalOrientationStrength, goalOrientationThresh - these allow fine tuning
of how the goal directional behavior works.  These are available in the
gameData.xml in the Actor model.