This module adds the lastname field to leads and converts current contact name into contact firstname.

Allows to transfer that from and to res.partner objects.

Without respecting the order, the user could get to a situation where
you are updating a field without lastname to set `firstname=False,
lastname="something"` and fail because Odoo started by `firstname` and
that lead to a temporary situation where no names are set and
`EmptyNamesError` gets raised.

With this patch, you force Odoo to write first the field with value,
whith avoids that situation and always works.