Odoo Release Updates

[MOV] mail, *: move discuss files to discuss_app/sidebar

[IMP] mail: make chat window use discuss.channel

[IMP] */__manifest__.py: add missing app pages

[REF] voip, whatsapp: use self_user from store

[IMP] whatsapp: snappy open/fold discuss sidebar category

[IMP] whatsapp: use discuss.channel getOrFetch

[REF] mail: message.isTranslatable simplified

[CLN] *: manifests

[REM] whatsapp: demo data

[IMP] ai, whatsapp: use getOrFetch from channel

[IMP] mail: action panel definition available to all discuss actions

[IMP] whatsapp: use discuss channel model

[REF] whatsapp: alias channel in thread actions

[FIX] *: automaticaly set legacy at_install

[IMP] (test_)whatsapp: avoid sending sample values in composer

[REF] mail_enterprise, *: rename Thread JS model to mail.thread

[FIX] whatsapp: move showSeenIndicator to message model

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

[FIX] whatsapp: message translation for agent when not member

[REF] ai,whatsapp: correspondant avatar is now the default value

[IMP] ai,whatsapp: use channel_type from channel model

[FIX] whatsapp: prevent fails in command palette tests