Show chair for session on main overview page

Plus keep it a link so opt out is not impossible.

pinaxcon/templates/symposion/schedule/_grid.html

@@ -16,7 +16,7 @@
           {% for room in timetable.rooms %}
             {% with room|trackname:timetable.day as track_name %}
               <th class="track-name">{% if track_name %}<p>{{ track_name }}{% endif %}</th>
-	        {% endwith %}
+            {% endwith %}
           {% endfor %}
         </tr>
       {% endif %}
@@ -44,6 +44,8 @@
                         <em>Session chair:
                         {% if not session.chair %}
                           <a href="{% url "schedule_session_detail" session.id %}">Volunteer! 🙋</a>
+                        {% else %}
+                          <a href="{% url "schedule_session_detail" session.id %}">{{ session.chair.user.attendee.attendeeprofilebase.attendeeprofile.name }}</a>
                         {% endif %}</em>
                       {% endfor %}
                     </div>