NEW FEATURE: AutoSync status now shown during gameplay with icon

NEW FEATURE:  added autogen icon to select music
NEW FEATURE:  toggle for easter eggs in Machine Options
NEW FEATURE:  marvelous step timing togglable in Machine Options
NEW FEATURE:  Grade AAAA (all marvelous)
CHANGE:  Only show ScreenHowToPlay if at least one player chose easy

stepmania/src/LifeMeterBattery.cpp

@@ -104,6 +104,7 @@ void LifeMeterBattery::ChangeLife( TapNoteScore score )
 
 	switch( score )
 	{
+	case TNS_MARVELOUS:
 	case TNS_PERFECT:
 	case TNS_GREAT:
 		break;