Layout updates of the Android Undo example

Author: vogella

com.vogella.android.userinterface.undo/res/layout/activity_main.xml

@@ -19,6 +19,7 @@
         android:background="#808080"
         android:dividerPadding="11dp"
         android:padding="4dp"
+        android:visibility="gone"
         >
 
         <TextView

com.vogella.android.userinterface.undo/res/menu/activity_main.xml

@@ -4,6 +4,6 @@
         android:id="@+id/menu_settings"
         android:title="Fake Delete"
         android:orderInCategory="100"
-        android:showAsAction="never"/>
+        android:showAsAction="always"/>
 
 </menu>