Add branch to cherry-pick links

Adds branch to cherry-pick links so you can see where it has been
picked to.

Feature: Issue 5032
Change-Id: I0702dc476f077ceb2ba5d22c97add44fe86f1bae
diff --git a/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html b/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html
index fc7d0d1..69c8cc0 100644
--- a/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html
+++ b/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html
@@ -137,7 +137,7 @@
         <template is="dom-repeat" items="[[_cherryPicks]]" as="change">
           <a href$="[[_computeChangeURL(change._number)]]"
               class$="[[_computeLinkClass(change)]]">
-            [[change.subject]]
+            [[change.branch]]: [[change.subject]]
           </a>
         </template>
       </section>