[FIX] web_kanban: float_time widget did not work
[FIX] web_kanban: float_time widget did not work

`instance` was undefined in this context, probably
following a forward-port mistake

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