Update translation files

See merge request !410

Resolve "Reimplement notification system on base of new calendar system"

Closes #209

See merge request !360

Update pyproject.toml

See merge request !345

Translations update from Weblate

See merge request !367

Translations update from Weblate

See merge request !366

Currently translated at 100.0% (63 of 63 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/de/

Currently translated at 47.6% (30 of 63 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/uk/

Currently translated at 9.5% (6 of 63 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/ru/

Currently translated at 82.5% (52 of 63 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/de/

Currently translated at 82.5% (52 of 63 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/de/

Currently translated at 99.3% (144 of 145 strings)

Translation: AlekSIS/AlekSIS-App-Chronos
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos/uk/

Currently translated at 100.0% (30 of 30 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/uk/

Currently translated at 100.0% (145 of 145 strings)

Translation: AlekSIS/AlekSIS-App-Chronos
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos/uk/

Currently translated at 87.5% (127 of 145 strings)

Translation: AlekSIS/AlekSIS-App-Chronos
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos/uk/

Currently translated at 96.6% (29 of 30 strings)

Translation: AlekSIS/AlekSIS-App-Chronos-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos-frontend/uk/

Fix permissions and managers after substitution planning feature

See merge request !407

Fix permission handling

See merge request !406

Update tox.ini

See merge request !398

Update .dev-js/package.json

See merge request !399

Do release 4.0.0.dev9

See merge request !401