Add chat link to track

Author: johanvdw

layouts/schedule/track.html

@@ -18,6 +18,9 @@
   { name: 'xCal', identifier: "/schedule/xcal/track/#{item[:slug]}/" },
 ].map{|cal| l(cal[:identifier], cal[:name]) }.join(", ")
 %>
+<br/>
+<i class="icon-comment"></i> <strong>Chat</strong>: <a href="<%= item[:chat_link] %>">Join the conversation!</a>
+
 <br/>
 </p>
 <br style="clear: both;"/>