Use safari.extension.settings instead of localStorage and WebSQL

safari/ext/background.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 643 matching lines @@
         // when a prerendered page is shown, forget the previous page
         // associated with its tab, and reset the toolbar item if necessary.
         // Note that it wouldn't be sufficient to do that when the old
         // page is unloading, because Safari dispatches window.onunload
         // only when reloading the page or following links, but not when
         // the current page is replaced with a prerendered page.
         replacePage(page);
         break;
     }
   });
+
+
+  /* Storage */
+
+  ext.storage = safari.extension.settings;
 })();