Dries Peeters 69f9f1140d feat(i18n): add translations, locale switcher, and user language preference ...

- Integrate Flask-Babel and i18n utilities; initialize in app factory
- Add `preferred_language` to `User` with Alembic migration (011_add_user_preferred_language)
- Add `babel.cfg` and `scripts/extract_translations.py`
- Add `translations/` for en, de, fr, it, nl, fi
- Update templates to use `_()` and add language picker in navbar/profile
- Respect locale in routes and context processors; persist user preference
- Update requirements and Docker/Docker entrypoint for Babel/gettext support
- Minor copy and style adjustments across pages

Migration: run `alembic upgrade head`

2025-09-11 23:08:41 +02:00

3.2 KiB

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