adding german translated tutorial 1st notebook

[vineetjai]

Update translation, partially Fixes #2781

[review-notebook-app]

Check out this pull request on 

You'll be able to see Jupyter notebook diff and discuss changes. Powered by ReviewNB.

[gkaissis]

I completely revised the translation, which was basically vanilla Google Translate. Although I truly appreciate the work to translate these notebooks, the translation should be performed by someone proficient both in the language and in the library, otherwise we're not really helping anyone. I'd be happy to have another native speaker help out and agree on common terminology (pointers, privacy-preserving AI etc.).

[vineetjai]

@gkaissis I had done all the necessary changes.