Show alerting rules and link back to Prometheus.

web/templates/alerts.html

@@ -13,6 +13,8 @@
           <th>Labels</th>
           <th>Active Since</th>
           <th>Last Refreshed</th>
+          <th>Generated By</th>
+          <th>Alerting Rule</th>
           <th>Silenced</th>
         </tr>
       </thead>
@@ -44,6 +46,8 @@
             </td>
             <td>{{timeSince .Created}} ago</td>
             <td>{{timeSince .LastRefreshed}} ago</td>
+            <td><a href="{{.Event.Payload.GeneratorUrl}}">{{.Event.Payload.GeneratorUrl}}</a></td>
+            <td>{{.Event.Payload.AlertingRule}}</td>
             <td>
               {{$silence := call $silenceForEvent .Event}}
               {{if $silence}}