Update the tab title to match the pad title in pad2

www/common/sframe-common-title.js

@@ -64,6 +64,7 @@ define(['jquery'], function ($) {
             var md = metadataMgr.getMetadata();
             $title.find('span.title').text(md.title || md.defaultTitle);
             $title.find('input').val(md.title || md.defaultTitle);
+            exp.title = md.title;
             //exp.updateTitle(md.title || md.defaultTitle);
         });
 

www/pad/main.js

@@ -127,6 +127,7 @@ define([
         });
 
         sframeChan.on('Q_SET_PAD_TITLE_IN_DRIVE', function (newTitle, cb) {
+            document.title = newTitle;
             Cryptpad.renamePad(newTitle, undefined, function (err) {
                 if (err) { cb('ERROR'); } else { cb(); }
             });