Add restart on resolution change

Projekte/mdga/client/src/main/java/pp/mdga/client/MdgaApp.java

@@ -10,6 +10,7 @@
 import pp.mdga.client.view.*;
 import pp.mdga.message.server.ServerInterpreter;
 
+import java.io.IOException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.prefs.Preferences;
@@ -263,7 +264,25 @@ public void updateResolution(int width, int height, float imageFactor) {
         prefs.putInt("height", height);
         prefs.putFloat("scale", imageFactor);
 
-        stop();
+        try {
+            restartApp();
+        } catch (Exception e) {
+            //nothing
+        }
+    }
+
+    public static void restartApp() throws IOException {
+        String javaBin = System.getProperty("java.home") + "/bin/java";
+        String classPath = System.getProperty("java.class.path");
+        String className = System.getProperty("sun.java.command");
+
+        ProcessBuilder builder = new ProcessBuilder(
+            javaBin, "-cp", classPath, className
+        );
+
+        builder.start();
+
+        System.exit(0);
     }
 }