Removed extra 'minutes' labels

src/main/java/seng302/App.java

@@ -1,6 +1,7 @@
 package seng302;
 
 import javafx.application.Application;
+import javafx.application.Platform;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Parent;
 import javafx.scene.Scene;
@@ -19,6 +20,10 @@ public class App extends Application
         primaryStage.setMaximized(true);
 
         primaryStage.show();
+        primaryStage.setOnCloseRequest(e -> {
+            Platform.exit();
+        });
+
     }
 
     public static void main(String[] args) {