base_panel: Include back/home button

panels/settings.py

@@ -67,19 +67,17 @@ class SettingsPanel(ScreenPanel):
             }
             self.add_option("printers", self.printers, pname, self.printers[pname])
 
-        self.control['back'].disconnect_by_func(self._screen._menu_go_back)
-        self.control['back'].connect("clicked", self.back)
         self.content.add(self.labels['main_box'])
 
     def activate(self):
         while len(self.menu) > 1:
             self.unload_menu()
 
-    def back(self, widget):
+    def back(self):
         if len(self.menu) > 1:
             self.unload_menu()
-        else:
-            self._screen._menu_go_back()
+            return True
+        return False
 
     def create_box(self, name, insert=None):
         # Create a scroll window for the macros