fix: Handle if place of search is not found

src/fellchensammlung/templates/fellchensammlung/search.html

@@ -9,5 +9,8 @@
         {{ search_form.as_p }}
         <input class="btn" type="submit" value="Search" name="search">
     </form>
+    {% if not place_found %}
+    <p class="error">{% translate "Ort nicht gefunden" %}</p>
+    {% endif %}
     {% include "fellchensammlung/lists/list-adoption-notices.html" %}
 {% endblock %}