Add link to changes to the repo admin page

This allows to quickly navigate to the project changes query page.

Bug: Issue 7853
Change-Id: I67ff846b88f3dc47731e01ffead021007657e556
diff --git a/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.html b/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.html
index eabe7a3..5fa8187 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.html
+++ b/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.html
@@ -55,7 +55,17 @@
     </style>
     <style include="gr-form-styles"></style>
     <main class="gr-form-styles read-only">
-      <h1 id="Title">[[repo]]</h1>
+      <style include="shared-styles"></style>
+      <style include="dashboard-header-styles"></style>
+      <div class="info">
+        <h1 id="Title" class$="name">
+          [[repo]]
+          <hr/>
+        </h1>
+        <div>
+          <a href$="[[_computeChangesUrl(repo)]]">(view changes)</a>
+        </div>
+      </div>
       <div id="loading" class$="[[_computeLoadingClass(_loading)]]">Loading...</div>
       <div id="loadedContent" class$="[[_computeLoadingClass(_loading)]]">
         <div id="downloadContent" class$="[[_computeDownloadClass(_schemes)]]">
diff --git a/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.js b/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.js
index 94b9e3f..6443095 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.js
+++ b/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.js
@@ -318,5 +318,9 @@
     _computeRepositoriesClass(config) {
       return config ? 'showConfig': '';
     },
+
+    _computeChangesUrl(name) {
+      return Gerrit.Nav.getUrlForProjectChanges(name);
+    },
   });
 })();