Removed 'Sail On' button, added help button, updated instructions text and added instructions tooltips to levels buttons.
Merge git://github.com/serg-srri-umass/TP-data-games

Conflicts:
	Flash/ShipOdyssey/src/odyssey/ShipOdyssey.mxml
Finding a treasure ends the current game and rat cost is hidden on levels 1&2 when the cost is $0.
New level description scroll dialog.
Merge remote-tracking branch 'refs/remotes/rmmccann-data-games/master'
Merge remote-tracking branch 'refs/remotes/TP-data-games.git/master'