Do not print "Message" in the airspace warning dialog. We know it is a message, for sure.
	modified:   ../Data/Dialogs/dlgLKAirspaceWarning.xml
	modified:   ../Data/Dialogs/dlgLKAirspaceWarning_L.xml
Move engineering option airspace message repeat time back to airspace warning params.
This is used for the case we set a low timeout time and we dont want the message to be repeated every 5 minutes.
set airspace message repeat readonly if warnings are disabled