Merge pull request #916 from jitsi/contaclist-title-update

Moves the number in the code, not as a translation parameter.

lang/main.json

 {
-    "contactlist": "On Call (__participants__)",
+    "contactlist": "On Call",
     "connectionsettings": "Connection Settings",
     "poweredby": "powered by",
     "feedback": "Give us your feedback",

modules/UI/side_pannels/contactlist/ContactList.js

         .parent()[numberOfContacts > 1 ? 'show' : 'hide']();
 
     $("#contacts_container>div.title").text(
-        APP.translation.translateString(
-            "contactlist", {participants: numberOfContacts}
-        ));
+        APP.translation.translateString("contactlist")
+            + ' (' + numberOfContacts + ')');
 }
 
 /**