feat(dev): display some twig variable

webapp/templates/app_base_footer.html.twig

@@ -10,3 +10,13 @@ FOOTER
 {#  <li><a href="/fr/pages/accessibility" aria-current="page">Accessibilité : non conforme</a> </li>#}
     <li><a href="/fr/pages/opendata" title="Open data - Données ouvertes du Comptoir du Libre">Open Data</a> </li>
 </ul>
+
+
+<br><br>  app_name <br> {{ app_name }}
+<br><br>  app_shortname <br> {{ app_shortname }}
+<br><br>  software_name <br> {{ software_name }}
+<br><br>  software_release <br> {{ software_release }}
+<br><br>  software_release_allow_public_display <br> {{ software_release_allow_public_display }}
+<br><br>  external_sill_hompage <br> {{ external_sill_hompage }}
+<br><br>  external_sill_software_fr_link <br> {{ external_sill_software_fr_link }}
+<br><br>  external_sill_software_en_link <br> {{ external_sill_software_en_link }}