Odoo Release Updates

[FIX] hr_holidays: skip disabled calendar slots in tour

[FIX] website: allow copyright bg color when footer has no bg color

[FIX] website, website_sale: avoid timeout dialog actions

[FIX] pos, l10n_ke_edi_oscu_pos: fix timeout on indexed db

[REF] mail: rename the various fetchMessages to avoid confusion

[FIX] core: pregenerate lazy loaded bundles

[IMP] mail, *: improvements to Discuss public page of portal users

[IMP] mail,im_livechat: add escalation notifications for visitors

[IMP] hr: add personal info to My Preferences

[IMP] base, mail: better docutils warnings, fix mail description

[IMP] mail: improve threads (subchannel) pannel

[FIX] point_of_sale: Refunds should have negative amount in the report

[IMP] l10n_tr_nilvera_edispatch: integrate API for automatic sending

[IMP] l10n_tr_nilvera{_*}: move common method

[FIX] point_of_sale, pos_discount: correctly format tip and discount

[REM] *: legacy PyPDF API uses

[FIX] html_editor: turn tabs to four spaces inside monospace banner

[FIX] project: preserve privacy_visibility during share flow

[FIX] base,html_editor: add missing check_translations context

[REM] core: explicit pypdf2 1.x references

[FIX] core: remove useless file

[IMP] account,account_edi_ubl_cii: Remove deprecated methods

[FIX] mail: fix style of mention suggestion

[IMP] l10n_ro_stock_edi: eTransport improvements

[IMP] mail: preview notification templates

[IMP] website_sale: add main shop and category micro-datas

[IMP] html_builder, website[_sale]: ui improvements

[FIX] website_sale_loyalty: prevent reload cycle on multi gift card

[FIX] stock: prevent traceback when generating serial/lot numbers

[IMP] core: warn on pypdf2 legacy API