Odoo Release Updates

[REF] *: cleanup ControlPanel buttons management

[REF] test_mail_enterprise, *: replace deprecated asyncStep() in tests

[CLN] *: manifests

[FIX] appointment: handle invalid booking URLs gracefully

[FIX] appointment: reduce prefetching to avoid extra SQL queries

[PERF] appointment: unavailabilities

[FIX] *: automaticaly set legacy at_install

[FIX] appointment: calendar attendee access token groups compatibility

[IMP] resource: refactor working schedule

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

[FIX] appointment: fix user max capacity update

[REF] *: use ir.config_parameter new API get_xxx, set_xxx

[IMP] appointment, *: enhance sitemap.xml and remove non-200 URLs

[FIX] appointment: fix max capacity on refresh

[FIX] appointment: add max allowed resource capacity in settings

[FIX] appointment: do not send "Appointment Booked" template to

[FIX] appointment: place guests after questions

[IMP] appointment, *: remove obsolete .btn-block

[FIX] appointment: adapt loading misusing the secondary color

[IMP] marketing_automation, *: fine-tune onboarding sample

[FIX] appointment: fix wrong appointment used for phone in test

[FIX] appointment: avoid user taking capacity in resource meetings

[FIX] appointment: follow up ui changes in appointment

[IMP] {pos_}appointment: redesign appointment quick-edit and popover

[IMP] appointment: add resource filters on apt calendar view