[FIX] point_of_sale: show pos facing display
[FIX] point_of_sale: show pos facing display

Add the possibility to configure the customer facing display in the pos
configuration. It was removed during this commit 80e89c7a11d.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo