add disapprovals index to site map

app/views/static/site_map.html.erb

@@ -16,6 +16,7 @@
           <li><%= link_to("Mass Edit", edit_moderator_tag_path) %></li>
         <% end %>
         <li><%= link_to("Similar Images Search", iqdb_queries_path) %></li>
+        <li><%= link_to("Disapprovals", moderator_post_disapprovals_path) %></li>
       </ul>
       <ul>
         <li><h1>Post Events</h1></li>