[FIX] rating : use default values for js widget
[FIX] rating : use default values for js widget

If no value given for the widget, use the default ones for the rating. Otherwise 'NaN' is sent to the server, causing crash in website_sale when posting a comment without rating

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