Fix: Forging email content must use dol_concatdesc.

htdocs/comm/propal.php

htdocs/commande/card.php

htdocs/compta/facture.php

htdocs/compta/facture/impayees.php

htdocs/core/actions_sendmails.inc.php

htdocs/core/class/interfaces.class.php

htdocs/core/triggers/dolibarrtriggers.class.php

...ore/triggers/interface_50_modAgenda_ActionsAuto.class.php

htdocs/expedition/card.php

htdocs/fichinter/card.php

htdocs/fourn/commande/card.php

htdocs/fourn/facture/card.php