[FIX] calendar: display filter "[Me]" before others
[FIX] calendar: display filter "[Me]" before others

The previous code actually returned the filter whose partner_id was the
lowest one (using '_.first' on an object that is not an array is quite clunky)

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo