Small changes

Fixes
Removed icons from some windows

Ratty/src/de/sogomn/rat/server/gui/ChatWindow.java

@@ -12,6 +12,7 @@ import javax.swing.JTextField;
 import javax.swing.text.DefaultCaret;
 
 import de.sogomn.engine.util.AbstractListenerContainer;
+import de.sogomn.engine.util.ImageUtils;
 
 public final class ChatWindow extends AbstractListenerContainer<IGuiController> {
 	
@@ -51,6 +52,7 @@ public final class ChatWindow extends AbstractListenerContainer<IGuiController>
 		contentPane.add(scrollPane, BorderLayout.CENTER);
 		contentPane.add(submit, BorderLayout.SOUTH);
 		
+		frame.setIconImage(ImageUtils.EMPTY_IMAGE);
 		frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
 		frame.setPreferredSize(SIZE);
 		frame.pack();

Ratty/src/de/sogomn/rat/server/gui/DisplayPanel.java

@@ -47,7 +47,6 @@ public final class DisplayPanel extends AbstractListenerContainer<IGuiController
 				notifyListeners(controller -> controller.userInput(CLOSED, userObject));
 			}
 		};
-		final BufferedImage[] icons = RattyGui.GUI_ICONS.stream().toArray(BufferedImage[]::new);
 		
 		screen.setResizeBehavior(ResizeBehavior.KEEP_ASPECT_RATIO);
 		screen.setTitle(title);
@@ -61,7 +60,7 @@ public final class DisplayPanel extends AbstractListenerContainer<IGuiController
 			
 			g.drawImage(image, 0, 0, null);
 		});
-		screen.setIcons(icons);
+		screen.setIcons(ImageUtils.EMPTY_IMAGE);
 		
 		return screen;
 	}

Ratty/src/de/sogomn/rat/server/gui/FileTree.java

@@ -100,7 +100,7 @@ public final class FileTree extends AbstractListenerContainer<IGuiController> {
 		frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
 		frame.setPreferredSize(SIZE);
 		frame.setContentPane(scrollPane);
-		frame.setIconImages(RattyGui.GUI_ICONS);
+		frame.setIconImage(ImageUtils.EMPTY_IMAGE);
 		frame.pack();
 		frame.setLocationRelativeTo(null);
 	}

Ratty/src/de/sogomn/rat/server/gui/RattyGui.java

@@ -66,6 +66,7 @@ public final class RattyGui extends AbstractListenerContainer<IGuiController> im
 	private static final BufferedImage FILE_MANAGEMENT_ICON = CATEGORY_SHEET.getSprite(1);
 	private static final BufferedImage UTILITY_ICON = CATEGORY_SHEET.getSprite(2);
 	private static final BufferedImage OTHER_ICON = CATEGORY_SHEET.getSprite(3);
+	private static final List<BufferedImage> GUI_ICONS = Arrays.asList(GUI_ICON_SMALL, GUI_ICON_MEDIUM, GUI_ICON_LARGE);
 	
 	private static final String SURVEILLANCE = LANGUAGE.getString("menu.surveillance");
 	private static final String FILE_MANAGEMENT = LANGUAGE.getString("menu.file_management");
@@ -93,8 +94,6 @@ public final class RattyGui extends AbstractListenerContainer<IGuiController> im
 	public static final String CHAT = LANGUAGE.getString("action.chat");
 	public static final String CLOSE = "Close";
 	
-	public static final List<BufferedImage> GUI_ICONS = Arrays.asList(GUI_ICON_SMALL, GUI_ICON_MEDIUM, GUI_ICON_LARGE);
-	
 	static {
 		SURVEILLANCE_ITEM_DATA.put(SCREENSHOT, MENU_ICONS[1]);
 		SURVEILLANCE_ITEM_DATA.put(DESKTOP, MENU_ICONS[2]);
@@ -108,7 +107,7 @@ public final class RattyGui extends AbstractListenerContainer<IGuiController> im
 		UTILITY_ITEM_DATA.put(WEBSITE, MENU_ICONS[8]);
 		UTILITY_ITEM_DATA.put(AUDIO, MENU_ICONS[7]);
 		UTILITY_ITEM_DATA.put(CHAT, MENU_ICONS[12]);
-		OTHER_ITEM_DATA.put(FREE, MENU_ICONS[11]);
+		OTHER_ITEM_DATA.put(FREE, MENU_ICONS[10]);
 	}
 	
 	public RattyGui() {

Ratty/src/de/sogomn/rat/server/gui/RattyGuiController.java

@@ -627,6 +627,8 @@ public final class RattyGuiController extends AbstractRattyController implements
 		super.closed(server);
 		
 		clients.values().forEach(ServerClient::logOut);
+		
+		System.exit(0);
 	}
 	
 	@Override