added restart button

src/main/java/Gui/GameGui.java

@@ -17,7 +17,7 @@ public class GameGui implements GameGuiInterface {
 
 public static JPanel MainPanel, ButtonPanel, headingPanel, WinningPanel, LosingPanel;
 public static JLabel Headline,QuestionLabel,WinningLabel, LosingLabel;
-public static JButton AnswersBtn1,AnswersBtn2,AnswersBtn3,AnswersBtn4;
+public static JButton AnswersBtn1,AnswersBtn2,AnswersBtn3,AnswersBtn4,RestartBtn;
 public static int questionNr = 0;
 GridLayout grid;
 GridBagConstraints gbc;
@@ -126,4 +126,10 @@ GridBagConstraints gbc;
 		AnswersBtn4.addActionListener(new loadNextQuestion());
 		MainPanel.add(ButtonPanel);
 	}
+	
+	@Override
+	public void createRestartButton() {
+		RestartBtn = new JButton("Neustarten");
+		LosingPanel.add(RestartBtn);
+	}
 }

src/main/java/Gui/GameGuiInterface.java

@@ -17,5 +17,7 @@ public interface GameGuiInterface {
 	void createLayout();
 
 	void createButtons();
+	
+	void createRestartButton();
 
 }