Replaced having 1 MouseListener per Tile JLabel which a single listener which asks the event's associated component for its row, column.

This isn't ideal, but is preferable to putting this information in each of rows x columns different mouse listeners.
Also added a title to the MainFrame.

src/view/MainFrame.java

@@ -19,6 +19,7 @@ public class MainFrame extends JFrame {
 	private final Referee game;
 
 	public MainFrame() {
+		super("Project 4");
 		game = new Referee();
 
 		init();