Merge branch 'marcosgdf-oop-pdf' into develop

htdocs/adherents/card_subscriptions.php

htdocs/comm/propal.php

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

htdocs/commande/card.php

htdocs/commande/class/commande.class.php

htdocs/compta/facture.php

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

htdocs/compta/paiement/card.php

htdocs/compta/payment_sc/card.php

htdocs/contrat/class/contrat.class.php

htdocs/core/class/commonobject.class.php

htdocs/core/lib/invoice2.lib.php

htdocs/core/modules/commande/modules_commande.php

htdocs/core/modules/contract/modules_contract.php

htdocs/core/modules/expedition/modules_expedition.php

htdocs/core/modules/facture/modules_facture.php

htdocs/core/modules/livraison/modules_livraison.php

htdocs/core/modules/project/modules_project.php

htdocs/core/modules/project/task/modules_task.php

htdocs/core/modules/propale/modules_propale.php