fix: Only try to access trust level when authenticated

src/fellchensammlung/templates/fellchensammlung/footer.html

@@ -92,6 +92,7 @@
                 {% translate 'Tierheime in der Nähe' %}
             </a>
             <br/>
+            {% if request.user.is_authenticated %}
                 {% trust_level "MODERATOR" as coordinator_trust_level %}
                 {% if request.user.trust_level >= coordinator_trust_level %}
                     <a class="nav-link " href="{% url "modtools" %}">
@@ -104,6 +105,7 @@
                         <i class="fa-solid fa-screwdriver-wrench fa-fw"></i>{% translate 'Admin-Bereich' %}
                     </a>
                 {% endif %}
+            {% endif %}
         </div>
     </div>
 </footer>