[FIX] mail: correctly handle message on star/unread updates
[FIX] mail: correctly handle message on star/unread updates

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