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/MainMenu.java

@@ -178,7 +178,7 @@ public class MainMenu extends BasicGameState {
 			throws SlickException {
 		int width = container.getWidth();
 		int height = container.getHeight();
-		
+
 		// draw background
 		OsuFile osu = MusicController.getOsuFile();
 		if (Options.isDynamicBackgroundEnabled() &&
@@ -232,7 +232,7 @@ public class MainMenu extends BasicGameState {
 		long time = System.currentTimeMillis() - osuStartTime;
 		g.drawString(String.format("opsu! has been running for %d minutes, %d seconds.",
 				TimeUnit.MILLISECONDS.toMinutes(time),
-				TimeUnit.MILLISECONDS.toSeconds(time) - 
+				TimeUnit.MILLISECONDS.toSeconds(time) -
 				TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(time))),
 				25, height - 25 - (lineHeight * 2));
 		g.drawString(String.format("The current time is %s.",
@@ -342,7 +342,7 @@ public class MainMenu extends BasicGameState {
 
 	@Override
 	public void mousePressed(int button, int x, int y) {
-		// check mouse button 
+		// check mouse button
 		if (button != Input.MOUSE_LEFT_BUTTON)
 			return;