FIX grid

talks/_templates/grid.html

@@ -26,7 +26,7 @@ td.talk {
             {% for talk in times[time / timestep * timestep] %}
                 {% if talk == None %}
                     <td></td>
-                {% elif talk != 'skip' %}
+                {% elif not talk.skip %}
                     <td class="talk" rowspan="{{talk.duration // timestep}}">
                         <a href="#talk-{{talk.id}}"> {{talk.title}}</a>
                     </td>