Add datestamp and timestamp notification options

data/interfaces/default/settings.html

@@ -1104,6 +1104,14 @@ available_notification_agents = sorted(notifiers.available_notification_agents()
                                     <td><strong>{action}</strong></td>
                                     <td>The action that triggered the notification.</td>
                                 </tr>
+                                <tr>
+                                    <td><strong>{datestamp}</strong></td>
+                                    <td>The date the notification was triggered.</td>
+                                </tr>
+                                <tr>
+                                    <td><strong>{timestamp}</strong></td>
+                                    <td>The time the notification was triggered.</td>
+                                </tr>
                                 <tr>
                                     <td><strong>{user}</strong></td>
                                     <td>The username of the person streaming.</td>