Rietveld: Display the remote tracked ref in both old and new UIs

appengine/chromium_rietveld/codereview/revert_patchset.py

 # Copyright 2013 Google Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 156 matching lines @@
   subject = _get_revert_subject(original_issue.subject)
   revert_reason = request.POST['revert_reason']
   revert_cq = request.POST['revert_cq'] == '1'
   description = _get_revert_description(
       request, revert_reason, reviewers, original_issue, original_patch_num,
       original_patchset_id)
   issue = models.Issue(subject=subject,
                        description=description,
                        project=original_issue.project,
                        base=original_issue.base,
+                       target_ref=original_issue.target_ref,
                        repo_guid=original_issue.repo_guid,
                        reviewers=reviewers,
                        cc=original_issue.cc,
                        private=original_issue.private,
                        n_comments=0,
                        commit=False,  # Do not check the commit box yet.
                        key=issue_key)
   pending_commits.append(issue)
 
   # Create the new revert patchset to use as the key in the new patches.
@@ skipping 106 matching lines @@
   issue.put()
 
   return HttpResponseRedirect(reverse('codereview.views.show',
                                       args=[issue.key.id()]))
 
 
 def _db_commit_all_pending_commits(pending_commits):
   """Puts all pending commits into the DB."""
   for pending_commit in pending_commits:
     pending_commit.put()