[FIX] website_mail: mail.message.check_access_rule: no check for super-user
[FIX] sale_stock: product_id_change_with_wh should not call another method (product_id_change) using super, but self. Otherwise some overrides are lost, leading to issues with event-related products.
[FIX] survey: regressions introduced in forward-port fd4fd35e3239c771ab9d692f47f61770ae882965
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-linux64