Add collapsible functionality for management blocks in event interface

This commit introduces a collapsible feature for the management blocks in the event interface, allowing users to expand or collapse sections for better navigation. New CSS styles have been added to support this functionality, and a button for toggling the visibility of the content has been implemented. The version code has been incremented to 4.72.651 to reflect these changes.

php/inc_settings.php

@@ -7,7 +7,7 @@
  * Constantes *
  *
  **************/
-define('_VERSION_CODE', '4.72.650');
+define('_VERSION_CODE', '4.72.651');
 define('_DATE_CODE', '2026-06-17');
 //MSIN-4290
 define('QR_SECRET_KEY', 'ms1_qr_2026_cle_secrete_longue_et_fixe');