How to add Disqus comment counter to topics on the site?

Question

JavaScript

How to add comments counter from Disqus service to topics on LiveStreet CMS?
Site: geekninja.ru
The counter should be with an icon here:

I want to note that the Disqus service itself is already attached to the site and works fine. The rest is up to the counter.
In Wordpress, this function is built-in, but here you need the help of specialists!
Save!

Answer 1

It's also written :
Here is an example for the first of the topics

<footer class="topic-footer">
  <ul class="list-unstyled list-inline small topic-info">
    <li class="topic-info-author">
      <a href="http://geekninja.ru/profile/romanstrukov/"><img src="http://geekninja.ru/uploads/images/00/00/35/2015/03/20/avatar_24x24.jpg?165946" alt="romanstrukov" class="avatar"></a>
      <a rel="author" href="http://geekninja.ru/profile/romanstrukov/">Роман Струков</a>
    </li>
    <li class="topic-info-date">
      <time datetime="2015-04-23T11:30:52+03:00" title="23 апреля 2015, 11:30" class="text-muted">
        23.04.2015
      </time>
    </li>
    <!-- Вот этот кусок для счётчика -->
    <li class="topic-info-comment">
      <a href="http://geekninja.ru/podcasts/227#disqus_thread" class="topic-comment"></a>
    </li>
  </ul>
</footer>