title: django-notifications-hq: cannot show notifications
body: <p>while the 'unread_list' API works, I cannot get the tag <code>{% live_notify_list list_class="dropdown-menu" %}</code> to work. </p>
  
  <p>The tag definition is:</p>
  
  <pre><code>def live_notify_list(list_class='live_notify_list'):
    html = "&lt;ul class='{list_class}'&gt;&lt;/ul&gt;".format(list_class=list_class)
    return format_html(html)
  </code></pre>
  
  <p>correct me if I am wrong, but this doesn't do anything but returning an unsorted list. I would like to display all the notifications. According to the documentation (<a href="https://pypi.org/project/django-notifications-hq/1.5.0/" rel="nofollow noreferrer">documentation</a>) all I need to do is to use <code>{% live_notify_list %}</code> however, this doesn't display anything. </p>
  
  <p>The library I am using at <a href="https://github.com/django-notifications/django-notifications" rel="nofollow noreferrer">github</a>.</p>