xmas: add outdated feature to map key;

xmas.json

@@ -86,6 +86,10 @@
         "    <td>{{ tagTrans('xmas:feature', value) }}</td>",
         "  </tr>",
         "{% endfor %}",
+        "  <tr>",
+        "    <td>{{ markerCircle({\"fillColor\":\"red\"})|raw }}</td>",
+        "    <td>outdated feature</td>",
+        "  </tr>",
         "</table>"
     ]
 }