[FIX] account: amount_residual_signed should be negative for refunds only
[FIX] account: amount_residual_signed should be negative for refunds only

ygol/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,bplancher/odoo,dfang/odoo,ygol/odoo,ygol/odoo,Elico-Corp/odoo_OCB,dfang/odoo,storm-computers/odoo,bplancher/odoo,microcom/odoo,laslabs/odoo,stephen144/odoo,laslabs/odoo,dfang/odoo,bplancher/odoo,ygol/odoo,ygol/odoo,microcom/odoo,microcom/odoo,hip-odoo/odoo,laslabs/odoo,microcom/odoo,sysadminmatmoz/OCB,ygol/odoo,hip-odoo/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,bplancher/odoo,hip-odoo/odoo,optima-ict/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,storm-computers/odoo,sysadminmatmoz/OCB,storm-computers/odoo,dfang/odoo,microcom/odoo,dfang/odoo,optima-ict/odoo,laslabs/odoo,stephen144/odoo,Elico-Corp/odoo_OCB,stephen144/odoo,storm-computers/odoo,stephen144/odoo,stephen144/odoo,storm-computers/odoo,laslabs/odoo,sysadminmatmoz/OCB,microcom/odoo,sysadminmatmoz/OCB,optima-ict/odoo,sysadminmatmoz/OCB,stephen144/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,storm-computers/odoo,bplancher/odoo,optima-ict/odoo,dfang/odoo,ygol/odoo,optima-ict/odoo,bplancher/odoo,optima-ict/odoo,hip-odoo/odoo