[tracking] localization and i18n

[gnunicorn]

We want to have our App available in the users language and local settings (e.g. way to write dates, numbers, etc).

• [x] #1334
• [x] #1517
• [x] research a way to include i18n translations for strings from rust
• [ ] left-to-right support
• [ ] extract rust local error-string into a local Error-Type instead
• [x] crowdsource translation helper (e.g. weblate.org, transifex)
• [x] automatized string extraction and file upload to crowdsourcing platform
• [ ] automatize crowdsource file integration on builds.