feature/#65: Implementation of multilingualism

Feature

Summary

This MR provides…

• Translate English to German language and vice-versa

Does the result of the MR comply to our "definition of done"?

• Unit tests passed
• Code reviewed
• Acceptance criteria met
• Functional tests passed
• Non-Functional requirements met
• Product Owner accepts the User Story

Documentation

• I updated the README (if applicable)
• I provided my functions with appropriate documentation
• I adjusted other parts of the documentation (if applicable)

Tests

Are we able to test this new feature?

• Yes, everything can be done via unit tests.

• [*] Yes, you can test by following these steps: Switch between different languages through Change language button in header. English or German.

• No, it is not possible.

Changelog

• I added a statement to the CHANGELOG.

Related Tickets

Add all related issues and especially those to be closed.

Related

Closes

Logs and Screenshots

/cc Mathias Göbel, Frank Schneider, Michelle Weidling