Add local results details pages.

build/android/pylib/results/presentation/template/main.html

Index: build/android/pylib/results/presentation/template/main.html
diff --git a/build/android/pylib/results/presentation/template/main.html b/build/android/pylib/results/presentation/template/main.html
index b5a78d337315518a32c6b4d7ec8b8ec2d3163db7..5c8df5e1213bf8b152822a29b0853bb1c2f6f2aa 100644
--- a/build/android/pylib/results/presentation/template/main.html
+++ b/build/android/pylib/results/presentation/template/main.html
@@ -75,9 +75,11 @@
         {% include 'template/table.html' %}
       {% endfor %}
     </div>
-  </br>
-    <a href="{{feedback_url}}" target="_blank"><b>Feedback</b></a>
-  </body>
+  {% if feedback_url %}
+    </br>
+      <a href="{{feedback_url}}" target="_blank"><b>Feedback</b></a>
+    </body>
+  {%- endif %}
   <script>
     sortSuiteTableByFailedTestCases();
     showSuiteTableOnlyWithReplaceState();