Fix: Several problem with localtax into PDF generation

Conflicts:
	htdocs/core/modules/commande/doc/pdf_einstein.modules.php
	htdocs/core/modules/facture/doc/pdf_crabe.modules.php
	htdocs/core/modules/propale/doc/pdf_azur.modules.php
	htdocs/core/modules/supplier_invoice/pdf/pdf_canelle.modules.php