Resolve "Check for correct semantic html elements"

Closes #474

See merge request !657

Resolve "Web Content Accessibility Guidelines"

Closes #101

See merge request !653

Update changelog for 2.0b2

See merge request !670

Resolve "About site broken"

Closes #480

See merge request !666

List public dashboard in navigation

Closes #382

See merge request !662

Translations update from Weblate

See merge request !664

Update poetry.lock

See merge request !665

Currently translated at 100.0% (576 of 576 strings)

Translation: AlekSIS/AlekSIS-Core
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis/de/

Resolve "Notification and announcement header lines are not bold"

Closes #462

See merge request !652

Resolve "OpenID Connect: Describe scopes in grant view"

Closes #465

See merge request !656

Update dependency django-templated-email to v3

See merge request !654

Update translation files

See merge request !659

Resolve "Remove all leftovers of datatables"

Closes #479

See merge request !660

# Conflicts:
#   CHANGELOG.rst

Resolve "Backup health check broken due to missing mathematical knowledge"

Closes #478

See merge request !658

Update dependency django-phonenumber-field to <5.3

See merge request !648