HW13: Final HW
Cleaned up Aeroplane Chess per prof feedback: removed confirm dialog box
for die rolls, also removed dialog box for jumps. Improved AI such that
die shows when viewing AI view (previously showed the "interactive"
version of the die).  AI view does not require player interaction (no
clicks, dialog box confirms, etc.). Go to
http://smg-gwt-emulator.appspot.com/GwtEmulator.html , select "AI Present"
and enter this URL: http://6-dot-aeroplane-chess.appspot.com/