sebastian/in_invoice_print_report: para imprimir listado detalles de cabecera de facturas de compras.

sebas 3ff77ad81b commit in_invoice_print_report		7 lat temu
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invoice_voucher_print.xml	3ff77ad81b commit in_invoice_print_report	7 lat temu
qweb.xml	3ff77ad81b commit in_invoice_print_report	7 lat temu
template.xml	3ff77ad81b commit in_invoice_print_report	7 lat temu