Odoo Release Updates

[REM] website: remove manual trigger of auto-hide menus

[FIX] website: translate deepest nodes

[REF] mail: make discuss.channel inherit mail.thread (JS)

[IMP] web, mail *: improve states of systray items

[FIX] website: unskip test_03_snippets_all_drag_and_drop

[FIX] web, website: industry autocomplete option clicking not working

[REF] html_editor, *: move custom snippet methods to website

[FIX] website: ensure copied configurator pages have website_id

[FIX] website: always add plugin with test helper addPlugin and similar

[FIX] website: always add plugin with test helper addPlugin and similar

[FIX] website: remove sidebar padding when header is hidden

[IMP] html_builder, website: standardize image positioning with overlay

[FIX] website: stabilize showcase background video in Chrome

[FIX] website: remove selection in dropdown when it closes

[FIX] website: display image gallery snippet without error

[FIX] website: Google Cookie usage on websites url

[FIX] website, html_builder: run after-save handlers if aborted

[FIX] website: fix categories showcase hover effect

[IMP] web, website: unify scrollable popovers with dropdown styles

[FIX] website: add missing pricelist description classes

[IMP] base: Warning on unused attributes in ir.qweb

[FIX] website: load a relative URL instead of an absolute in the SEO cover image

[IMP] website : standardize floating toolbar layout

[REF] all: model's description should be singular

[FIX] website: keep pricelist blocks intact

[FIX] website: hide mega menu link if its content is not visible

[IMP] website: inline new content access checks

[FIX] website: ensure video container fills available width

[FIX] *: fix ignored failed tests

[FIX] website: accept absolute website_meta_og_img