Added a pretty title screen to the application.

- Created a GUI title screen
- Drew images to be display on the title
- Created controller for the title
- Changed visualiser main to initially display title
- Added functionality for host button

#story[1087]

racevisionGame/src/main/java/visualiser/app/App.java

@@ -21,6 +21,11 @@ public class App extends Application {
         launch(args);
     }
 
+    /**
+     * Method that displays the visualiser, starting with the title screen.
+     * @param stage the stage to be displayed
+     * @throws Exception if something wrong with title screen
+     */
     public void start(Stage stage) throws Exception {
         stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
             @Override
@@ -29,10 +34,11 @@ public class App extends Application {
                 System.exit(0);
             }
         });
-        FXMLLoader loader = new FXMLLoader(getClass().getResource("/visualiser/scenes/main.fxml"));
+        FXMLLoader loader = new FXMLLoader(getClass().getResource
+                ("/visualiser/scenes/titleScreen.fxml"));
         Parent root = loader.load();
-        Scene scene = new Scene(root, 1200, 800);
-        scene.getStylesheets().add("/css/nightMode.css");
+        stage.setResizable(false);
+        Scene scene = new Scene(root);
 
         stage.setScene(scene);
         stage.setTitle("RaceVision - Team 7");