update admin logo

ucebnice/templates/admin/base_site.html

@@ -79,3 +79,11 @@
     }
 </style>
 {% endblock %}
+
+{% block branding %}
+    <h1 id="site-name">
+        <a href="{% url 'admin:index' %}">
+            <img src="{% static 'shared/logo.png' %}" height="40px">
+        </a>
+    </h1>
+{% endblock %}