quick fix to show summary nodes, still not fully supported

MindSlide-Export.html

@@ -407,26 +407,24 @@ <h2>
 <li>Many elements are still not supported. We welcome any pointers how to best do it, as well as help to do so!</li>
 <li>node and edge style, clouds</li>
 <li>free "post-it" nodes are not marked differently from other nodes</li>
-<li></li>
 <li class="icon">
 <span aria-hidden="true" class="fa fa-list"></span>node attributes, zoom on images, author informations</li>
 <li class="icon">
 <span aria-hidden="true" class="fa fa-paperclip"></span>packaging presentation with all its dependencies in a single portable file.</li>
 <li>
-<a href="#/ID_1915754421" class="link subsection"> &#8628;</a>
-</li>
-<li>
 <a href="https://github.com/berteh/mindslide/issues" class="icon"><span aria-hidden="true" class="fa fa-lightbulb-o"></span>Put your suggestions on our "issues" list!</a>
 </li>
 <li class="icon">
 <span aria-hidden="true" class="fa fa-warning"></span>Known Bugs<a href="#/ID_191827926" class="link subsection"> &#8628;</a>
 </li>
+<li>summary node</li>
 </ul>
 </section>
-<section class="content" id="ID_1915754421">
+<section class="content" id="ID_1116046035">
 <h3></h3>
 <ul>
-<li>summary nodes</li>
+<li>summary node</li>
+<li>summary node</li>
 </ul>
 </section>
 <section class="content" id="ID_191827926">