Odoo Release Updates

[FIX] web: tests - restore mock fields defaults

[FIX] hr: make sure the employee fields are searchable

[FIX] website_slides: adapt fullscreen highlighting interaction

[FIX] stock_account: better search valuation error

[FIX] sale: use x.with_prefetch() instead of x[0] to avoid prefetching

[IMP] website: link state field to country field in form builder

[IMP] l10n_my_edi: remove samples from list view

[IMP] html_builder, *: improve multi layer background support

[FIX] sale_product_matrix: variant grid combo filter

[FIX] pos_online_payment_self_order: remove unnecessary test flag from tour

[IMP] l10n_sa_{edi}: adapt the taxes to the exemption reasons

[REF] html_editor: refactor moveRow and moveColumn to use index

[FIX] account_fleet: move fleet tax report test and query to enterprise

[FIX] html_editor: traceback on adding vimeo link in knowledge

[FIX] website, *: checkered background display in the color presets

[FIX] web,test_orm: allow group by for property type tag

[IMP] orm: DomainCustom.optimize

[FIX] orm: DomainCustom.__repr__

[PERF] orm: active_test in optimized form

[FIX] pos{,_restaurant}_stripe: fix tip after payment

[IMP] purchase_stock: Suggest readability & performance

[FIX] account: convert invoice/refund while storno

[ADD] website_mass_mailing_event: event autofill snippet

[IMP] web: cache search and pager requests

[IMP] hr: added a nationality field

[REF] web: use Domain object

[FIX] hr_holidays_attendance: Fix traceback on hourly extra hours

[FIX] account: keep accounts on payment method lines compute

[REF] iot_drivers: all drivers on IoT Box by default

[FIX] website_sale: fix `remove_main_product_image*` tours