Change adds missing helpers and alters some of their messages in differents parts of HR apps. task-3522163 closes odoo/odoo#145268 X-original-commit: a2238763d4fad99da69a96104adf26b6d8eca938 Related: odoo/enterprise#52261 Signed-off-by: Bertrand Dossogne (bedo) <bedo@odoo.com>