[FIX] account: translate tax description in partner lang
[FIX] account: translate tax description in partner lang

The tax description in the taxes lines
(e.g. in invoices) is supposed
to be translated in the customer/supplier language,
as this is what is displayed in the printed reports
sent to the customer.

This is the behavior in place in Odoo 7.0 & 8.0.
(e.g. in invoices)

opw-675038

laslabs/odoo,dfang/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,storm-computers/odoo,microcom/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,microcom/odoo,storm-computers/odoo,laslabs/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,dfang/odoo,microcom/odoo,storm-computers/odoo,storm-computers/odoo,hip-odoo/odoo,bplancher/odoo,storm-computers/odoo,Elico-Corp/odoo_OCB,ygol/odoo,Elico-Corp/odoo_OCB,bplancher/odoo,sysadminmatmoz/OCB,laslabs/odoo,bplancher/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,microcom/odoo,storm-computers/odoo,ygol/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,bplancher/odoo,ygol/odoo,microcom/odoo,dfang/odoo,dfang/odoo,dfang/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,laslabs/odoo,hip-odoo/odoo,dfang/odoo,microcom/odoo,bplancher/odoo,sysadminmatmoz/OCB,bplancher/odoo