Namespaces: added feature to show folder structure

Namespaces are an important feature to have a hierarchic structure for the wiki.
A new site was added that can display and navigate the folder structure.

src/templates/entry.html

@@ -3,7 +3,7 @@
 <div class="container">
     <div class="content">
         {% autoescape off %}
-	<span>{{ content }}</span>
+	{{ content }}
         {% endautoescape %}
     </div>
 </div>