[FIX] website_portal_sale: fix access rights issues when viewing quotes
[FIX] website_portal_sale: fix access rights issues when viewing quotes

Portal users do not have access on invoices or invoice lines. However when
viewing an online quotation in website_portal_sale some computation is
performed based on invoices and invoice lines. We therefore iterate on
invoice and invoice lines as superuser as we do not want to grant any
additional access on those models for portal users.

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