[FIX] base: Fix Swiss date and number formats

The fr_CH date format has been broken for years, with unnecessary spaces
after the period. This has been removed.

The de_CH thousands separator prematurely ends after the millions
because it does not loop indefinitely. This has been fixed as well.

closes odoo/odoo#134482

Signed-off-by: de Wouters de Bouchout Jean-Benoît (jbw) <jbw@odoo.com>