Extend support for all currencies listed in the SIPS documentation,
including the decimal numbers per currency. Move this hardcoded data
is a less annoying place.
Remove unnecessary code (e.g. checking if there is more than one payment
with the same reference, which can't happen due to a SQL unique
constraint from the payment module).
Code clarity while I'm at it.
Task-2259942
closesodoo/odoo#51473
Related: odoo/upgrade#1216
Signed-off-by: Damien Bouvy (dbo) <dbo@odoo.com>
Kevin Baptiste