Add 'trust' setting to demo (#2107)

Ask if enabling 'trust' from the permalink

website/pages/index.html

@@ -162,6 +162,10 @@
             </select>
           </td>
         </tr>
+        <tr>
+          <td><label for="trust">trust</label></td>
+          <td><input type="checkbox" id="trust"/></td>
+        </tr>
       </table>
       <h4><label for="macros">macros</label></h4>
       <textarea id="macros" placeholder="JSON">