show icons for nodes with link

MindSlide-Export.html

@@ -405,14 +405,16 @@ <h2>
       Not supported yet</h2>
 <ul>
 <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 class="icon">
+<span aria-hidden="true" class="fa fa-close"></span>node and edge style, clouds</li>
+<li class="icon">
+<span aria-hidden="true" class="fa fa-bell"></span>free "post-it" nodes are not marked differently from other nodes</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="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 class="icon">
+<span aria-hidden="true" class="fa fa-lightbulb-o"></span><a href="https://github.com/berteh/mindslide/issues" class="link external">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>
@@ -428,8 +430,7 @@ <h3></h3>
 </ul>
 </section>
 <section class="content" id="ID_191827926">
-<h3 class="icon">
-<span aria-hidden="true" class="fa fa-warning"></span>Known Bugs</h3>
+<h3>Known Bugs</h3>
 <ul>
 <li>Various things we should fix, any pointer how to do so is welcome.</li>
 <li>