Updated code to work with changes in ObjectIO and TSquare packages.

createFromString(String, long) in tSquare.entity.Manager
has been changed to createFromMsg(MarkupMsg, long). So all the Manager
subclasses had to implement this new method and remove the old one.
The tSquare.entity.Entity class removed the createToString methode and replaced
it with createToMsg so all Entity subclasses had to make those changes.
Variables like x, y, angle, height in the Entity class were changed to
objectIO.netObject.NetVar subclasses so code in the triGame package had to
be updated as well.