NEW Usage of vat code seems ok everywhere.

htdocs/comm/propal/class/propal.class.php

htdocs/commande/class/commande.class.php

htdocs/compta/facture/class/facture.class.php

htdocs/core/class/html.form.class.php

htdocs/core/lib/functions.lib.php

htdocs/core/tpl/objectline_edit.tpl.php

htdocs/core/tpl/objectline_view.tpl.php

htdocs/fourn/class/fournisseur.commande.class.php

htdocs/fourn/class/fournisseur.facture.class.php