Addded the session description to the coverpage as well

Author: mikicz

naucse/templates/coverpage.html

@@ -29,6 +29,8 @@ <h1>
             <div class="details">{{course.place}}, {{course.time}}</div>
         {% endif %}
 
+        {% if session.description %}{{ session.description | markdown }}{% endif %}
+
         <h2>Materiály</h2>
         {{ material_list(session.materials, filter_type='lesson') }}