add tax% on sales order add and edit details section.
check all conditions in Order for prints completed(order_list_individual.php,order_list_individual_A5.php),
check all conditions in invoice prints completed(invoice_list_individual_tax.php),
check all conditions in credit note prints completed(creditnote_individual_tax.php,creditnote_individual.php),
check all conditions in direct invoice prints completed(print_pos.php,direct_invoice_list_individual.php:-have one error),