generate documentation from config.sample.php

admin_manual/configuration_server/config_sample_php_parameters.rst

@@ -441,6 +441,10 @@ characters).
 
 By default, the passwords are stored encrypted in the database.
 
+WARNING: If disabled, password changes on the user back-end (e.g. on LDAP) no
+longer log connected clients out automatically. Users can still disconnect
+the clients by deleting the app token from the security settings.
+
 ::
 
 	'hide_login_form' => false,