Update not conserved and menu

webgis/js/components/NotConserved.js

@@ -129,6 +129,10 @@ export class NotConserved {
             </div>
         `;
 
+        if (!this.publications.length && !this.documentation.length) {
+            content = '<p class="has-text-centered">Nessun documento disponibile.</p>';
+        }
+
         return content;
     }