[FIX] account: fix condition to create exchange_rate_entries, in some case we don't want to create one
[FIX] account: fix condition to create exchange_rate_entries, in some case we don't want to create one

Typically when sum(debit) = sum(credit) and sum(amount_currency) = 0

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