Restore notes link on build summary page (#3299)

#3259 updated the header of the
build summary page, which deleted the link to the notes page in the
process. This PR re-adds it as a dedicated section. I plan to move all
of the links to `/builds/<id>/*` pages to a new sidebar UI element in
the next 1-3 releases, so I expect this solution to be a temporary fix.

Author: williamjallen

resources/js/vue/components/BuildSummary.vue

@@ -531,6 +531,19 @@
       <br>
       <br>
 
+      <!-- Notes section -->
+      <div class="title-divider">
+        Notes
+      </div>
+      <a
+        class="tw-link tw-link-hover"
+        :href="$baseURL + '/builds/' + cdash.build.id + '/notes'"
+      >
+        View Notes
+      </a>
+      <br>
+      <br>
+
       <!-- Instrumentation section -->
       <div class="title-divider">
         Instrumentation