Merge branch 'main' into 'calendar-acceptdeclinemaybe-mail'

# Conflicts:
#   l10n/de.js
#   l10n/de.json
#   l10n/de_DE.js
#   l10n/de_DE.json
#   l10n/es.js
#   l10n/es.json
#   l10n/fr.js
#   l10n/fr.json