Minor graphical updates and code cleaning.

- Padded game score display, and always display 2 digits in front of the decimal (e.g. 00.00% instead of 0.00%).
- Keep map progress circle at a fixed location instead of basing it off the score length.
- Moved some track resets (pause + restart at preview) to trigger upon loading the song menu.  Fixes weird behaviors when leaving the game state.
- Cleaned up trailing whitespace and added missing overrides.

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

src/itdelatrisu/opsu/states/Game.java

@@ -932,7 +932,7 @@ public class Game extends BasicGameState {
 	 * Returns the object approach time, in milliseconds.
 	 */
 	public int getApproachTime() { return approachTime; }
-	
+
 	/**
 	 * Returns an array of hit result offset times, in milliseconds (indexed by GameScore.HIT_* constants).
 	 */