Misc. bug fixes and improvements.

- Fixed Game not loading OsuFile for maps in a song group. (blame: 5612336)
- Implemented rotations for reverse arrows, and added a new one by Alic1a.
- "Auto" mod: pausing no longer requires click to unpause, and mod images are permanently drawn.
- Program now loads from Main Menu instead of Options (unnecessary complications for the sake of a transition).

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/states/MainMenu.java

@@ -111,6 +111,8 @@ public class MainMenu extends BasicGameState {
 	@Override
 	public void init(GameContainer container, StateBasedGame game)
 			throws SlickException {
+		Utils.init(container, game);
+
 		this.game = game;
 
 		osuStartTime = System.currentTimeMillis();