Fixed some UI bugs, and redesigned some UI elements.

- Changed class structure (added dialogs, cells folder)
- Changed font to Baloo as it has better font height
- Figured out a way to change the font color of max player slider thumb
- Added cursor effect when mouse hover on any button
- Fixed drop shadow bug for lobby view player cell
- Moved drop shadow effect from player cell controller to css

#story[1245]

src/main/java/seng302/visualiser/controllers/ViewManager.java

@@ -11,11 +11,11 @@ import javafx.scene.layout.StackPane;
 import javafx.scene.paint.Color;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import seng302.model.ClientYacht;
 import seng302.visualiser.GameClient;
 
 import java.io.IOException;
 import java.util.HashMap;
+import seng302.visualiser.controllers.dialogs.BoatCustomizeController;
 
 public class ViewManager {