clearly differentiate users lists

users in room vs. users on server

cockatrice/src/userlist.cpp

@@ -240,7 +240,7 @@ void UserList::retranslateUi()
 {
     userContextMenu->retranslateUi();
     switch (type) {
-        case AllUsersList: titleStr = tr("Users online: %1"); break;
+        case AllUsersList: titleStr = tr("Users connected to server: %1"); break;
         case RoomList: titleStr = tr("Users in this room: %1"); break;
         case BuddyList: titleStr = tr("Buddies online: %1 / %2"); break;
         case IgnoreList: titleStr = tr("Ignored users online: %1 / %2"); break;