Issue 3870 - Rewrite legacy options page to use async messages

lib/notificationHelper.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 117 matching lines @@
       break;
     case "open-all":
       openNotificationLinks();
       break;
     case "configure":
       Prefs.notifications_showui = true;
       ext.showOptions(function(page)
       {
         page.sendMessage({
           type: "app.respond",
-          action: "switchToOptionsSection",
+          action: "focusSection",
           args: ["notifications"]
         });
       });
       break;
     case "question":
       NotificationStorage.triggerQuestionListeners(activeNotification.id, buttonIndex == 0);
       NotificationStorage.markAsShown(activeNotification.id);
       activeNotification.onClicked();
       break;
   }
@@ skipping 122 matching lines @@
   let methods = displayMethods[notificationType] || defaultDisplayMethods;
   return methods.indexOf(method) > -1;
 };
 
 ext.pages.onLoading.addListener(page =>
 {
   NotificationStorage.showNext(stringifyURL(page.url));
 });
 
 NotificationStorage.addShowListener(showNotification);