Continued work on Beginner Level 4.
Script changes:
Director - Moved message box scaling function into a different function GUIDimensionSetup() that gets called at Start; Added signature of EventTrigger() overload to support event triggering by objects other than player.
LevelDirecor - Added signature for OnEventTrigger() overload, as in Director. This method can be overridden, but not necessarily.