Cleaned up FleetIcon management, moving it directly over Leadship with no offset.

Still uses icon transform scale rather than widget height and width to scale as there
are issues I have yet to understand wrt scaling using height and width. I expect to launch
a new branch after this to investigate placing FleetCmd as a child of lead ship.
See Oct 8 - Oct 24 FL Accomplishments. Just prior to beginning investigation into MVC/MVP