String internationalization for German.

[turbinenreiter]

I'm gonna get started on German translations.

[turbinenreiter]

#1114

[dglaude]

@turbinenreiter , I believe the first step is to create your de.po file and push it here: https://github.com/adafruit/circuitpython/tree/master/locale

This is because the first step for someone wanting to help is to check if the file exist, not to dig in every linked issue on #1098 ...

[Tasm-Devil]

There is still a lot work to be done. I've got the problem, that I feel uncomfortable to translate native python error messages because it will be harder to search for those errors in the Internet after translations.

[Tasm-Devil]

houston we have a problem.
The german translations aren't displayed properly in the REPL. The encoding is wrong.
Zurückverfolgung (jüngste Aufforderung zuletzt) should be Zurückverfolgung (jüngste Aufforderung zuletzt)

EDIT:
It seems that this is a Problem with the MU editor because the german Umlaute (äöüß) are shown correct within the screen terminal-program.