add a Django Admin link to the menu if the logged-in user is staff

src/templates/base.html

@@ -74,6 +74,7 @@
             <li><a href="{% url 'people' %}">People</a></li>
             {% if user.is_authenticated and user.is_staff %}
             <li><a href="{% url 'backoffice:index' %}">Backoffice</a></li>
+            <li><a href="{% url 'admin:index' %}">Django Admin</a></li>
             {% endif %}
           </ul>
           <ul class="nav navbar-nav navbar-right">