feat: mark a library document for a specific purpose

templates/administrative/system/document/index.html.twig

@@ -14,6 +14,9 @@
                     <th>
                         {{ knp_pagination_sortable(pagination, 'Dateiname', 'upload.originalFilename') }}
                     </th>
+                    <th>
+                        Verwendung
+                    </th>
                     <th>
                         Dateigröße
                     </th>
@@ -32,6 +35,11 @@
                         <td>
                             {{ document.displayName ? document.displayName : document.originalFilename }}
                         </td>
+                        <td>
+                            {# A slot belongs to exactly one document, so this is what tells staff
+                               which file a feature actually picks up. #}
+                            {{ document.token ? document.token.label() : '-' }}
+                        </td>
                         <td>
                             {{ document.size|file_size }}
                         </td>
@@ -71,7 +79,7 @@
                     </tr>
                 {% else %}
                     <tr>
-                        <td colspan="5">
+                        <td colspan="6">
                             Keine Daten...
                         </td>
                     </tr>