add missing German translations

[zven]

Before You Proceed

• I have cleared my browsers cache and the issue still remains
• I have tried a different browser to see if it is related
• I have searched existing issues to avoid duplicates

Description

There is a number of strings that are not translated when I set the language of my browser, with the language toggle on the map page and in the profile settings to German:

Expected Behavior

If I set the language to German, the UI is actually using German everywhere.

Steps to reproduce

Set you browser to German. Set the UI with the steps outlined above to German.
Open the pages that are depicted in the screenshots above.

Environment

MacOS 15.7.3, Firefox 149.0

Console Output

Workaround

No response

Additional Information

No response

[zven]

German Text for exposition / Standort is still missing in the my devices table:

In the other places, we have Standort and translate the exposition string:

[zven]

Still missing translations on the device settings page:

[zven]

Missing translations were added. 👍

[zven]

@jona159 Since you are also localizing dates in this PR, it occured to me that we have a mismatch on the same page: