Fix: ajout d'un jeton aléatoire dans les requetes POST

htdocs/adherents/card_subscriptions.php

htdocs/adherents/fiche.php

htdocs/adherents/fiche_subscription.php

htdocs/adherents/index.php

htdocs/adherents/options.php

htdocs/adherents/type.php

htdocs/admin/adherent.php

htdocs/admin/agenda.php

htdocs/admin/agenda_xcal.php

htdocs/admin/barcode.php

htdocs/admin/bookmark.php

htdocs/admin/boutique.php

htdocs/admin/boxes.php

htdocs/admin/cashdesk.php

htdocs/admin/clicktodial.php

htdocs/admin/commande.php

htdocs/admin/company.php

htdocs/admin/compta.php

htdocs/admin/comptaexpert.php

htdocs/admin/const.php