Merge branch '927-after-editing-an-oauth-application-an-aleksis-matrjoschka-situation-occurs' into 'master'

Resolve "After editing an OAuth application, an AlekSIS Matrjoschka situation occurs"

Closes #927

See merge request !1356

Optimize request handling with calendar events and fix typing

See merge request !1359

Resolve "Deleting persons is too easy"

Closes #669

See merge request !1357

Resolve "Remove Yubikey support"

Closes #876

See merge request !1336

Resolve "Make calendar type select button group mandatory"

Closes #944

See merge request !1355

Resolve "Improve design of cancelled/replaced calendar events"

Closes #890

See merge request !1351

Set mutation fields explicitly

See merge request !1353

Resolve "Events on last day of range to be fetched are not fetched"

Closes #931

See merge request !1348

This reverts commit aa85db6b

Optimize tox for speed with linting/reformatting

See merge request !1338

Update .gitignore

See merge request !1347

Update pyproject.toml

See merge request !1342

Update .dev-js/package.json

See merge request !1341

Resolve "Set calendar feed language correctly"

Closes #913

See merge request !1345

Resolve "Collapse icon on progress drawer is inverted"

Closes #863

See merge request !1343

Resolve "Birthday calendar entries should show real birthday"

Closes #914

See merge request !1344