Merge labels and access keys into one string in locales

chrome/content/ui/sendReport.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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 1183 matching lines @@
 }
 
 function updateNextButton()
 {
   let nextButton = document.documentElement.getButton("next");
   if (!nextButton)
     return;
 
   if (document.documentElement.currentPage.id == "commentPage")
   {
-    if (!nextButton.hasAttribute("_origLabel"))
+    if (!("_origLabel" in nextButton))
     {
       nextButton._origLabel = nextButton.label;
       nextButton._origAccessKey = nextButton.accessKey;
       [nextButton.label, nextButton.accessKey] = Utils.splitLabel(document.documentElement.getAttribute("sendbuttonlabel"));
     }
   }
   else
   {
-    if (nextButton.hasAttribute("_origLabel"))
+    if ("_origLabel" in nextButton)
     {
       nextButton.label = nextButton._origLabel;
       nextButton.accessKey = nextButton._origAccessKey;
       delete nextButton._origLabel;
       delete nextButton._origAccessKey;
     }
   }
 }
 
 function initDataCollectorPage()
@@ skipping 336 matching lines @@
 
 function censorURL(url)
 {
   return url.replace(/([?;&\/#][^?;&\/#]+?=)[^?;&\/#]+/g, "$1*");
 }
 
 function encodeHTML(str)
 {
   return str.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;");
 }