[*] MO : mondial relay

fix issues from Prestashop's recommandations
Here again, you made a rollback of my modifications from this [commit](https://github.com/PrestaShop/PrestaShop-modules/commit/7e91f4a0568762467dd478920f76b3aacbe2b28f#diff-ba52043c9cef6b19fe7853e2cb2f5b83L690)