add failure, response table headers

static/index.html

@@ -38,6 +38,8 @@
                     <th>Timestamp</th>
                     <th>Model</th>
                     <th>Status</th>
+                    <th>Failure Message</th>
+                    <th>Response Data</th>
                 </tr>
             </thead>
             <tbody>