change some user to visitor(s) on agent chat page

Author: DarMontou

resources/public/agent-chatb0x.html

@@ -44,7 +44,7 @@ <h5 class="media-heading">Some User</h5> <!-- username -->
 
     <div class="list-group col-lg-2 pull-right">
       <a class="list-group-item active" href="#">
-        Some User
+        Visitor(s)
       </a>
       <a class="list-group-item" href="#">Waiting User 1</a>
       <a class="list-group-item" href="#">Waiting User 2</a>