Resolved the traceback in Events > Ticket Type tab, when the product is removed
Merge pull request #522 from odoo-dev/saas-5-opw-609008-dhr

[FIX] event_sale: avoid traceback when remove product in onchange view
[FIX] website_sale: retur the browse record of category insead of int
[FIX] product_email_template: fixed a bug preventing from sending emails and therefore from validating invoices when having templates without attachments linnked to a product.
Merge pull request #524 from odoo-dev/saas-5-website_sale-browse-category-chm

[FIX] website_sale: retur the browse record of category insead of int
Merge branch 'upstream/saas-5' into saas-5