DT/HF/Playback changes.

Can watch HalfTime on half speed.
Reset pitch on leaving the game state.
Load songInfo when entering select song menu.
Playback button fades in on hover instead of expands.
Reverted spinner changes. It should be fixed separately.

src/itdelatrisu/opsu/Utils.java

@@ -49,6 +49,7 @@ import java.util.Scanner;
 
 import javax.imageio.ImageIO;
 
+import itdelatrisu.opsu.replay.PlaybackSpeed;
 import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.Display;
 import org.lwjgl.opengl.GL11;
@@ -180,6 +181,9 @@ public class Utils {
 		// initialize game mods
 		GameMod.init(width, height);
 
+		// initialize playback buttons
+		PlaybackSpeed.init(width, height);
+
 		// initialize hit objects
 		OsuHitObject.init(width, height);