title: Trying to add a button to Django admin
body: <p>So, I use a custom administration - <code>grappelli</code>. I need to add my button with functionality.
  Used the documentation <a href="https://django-grappelli.readthedocs.io/en/latest/customization.html" rel="nofollow noreferrer">here</a> and <a href="https://stackoverflow.com/questions/70319606/importrcannot-import-errolfromdjangof-conconcon-upurto">here</a></p>
  <p>I created the <code>timetable\templates\admin\change_list.html</code>, code in it:</p>
  <pre><code>{% extends &quot;admin/change_list.html&quot; %} {% load i18n %} 
  
  {% block object-tools-items %}
      {{ block.super }}
      &lt;li&gt;
          {% comment %} &lt;a class=&quot;historylink&quot; href=&quot;test_data/&quot;&gt;My custom admin page&lt;/a&gt; {% endcomment %}
          &lt;a href=&quot;#&quot; class=&quot;grp-add-link grp-state-focus&quot;&gt;Add ТЕСТ (ТаМ ДЕ НАДА)&lt;/a&gt;
          прив))
      &lt;/li&gt;
  {% endblock %}
  </code></pre>
  <p>If you look at an ordinary admin (without <code>grappelli</code>), the button appeared If With it, then no button.</p>
  <p>If you edit <code>venv\Lib\site-packages\grappelli\templates\admin\change_list.html</code>, The button appears, but it’s not the case...</p>
  <p>How can I make <code>grappelli</code> see my button?</p>