Updated German translations


> "umdrehen" is perfectly fine for "flip". "kippen" would be translated to
> "to tilt" in my opinion.

Right umdrehen would be correct translation I guess... I took kippen
since kippen for me is the easiest form of rotation (rotation of the
short edge around the long edge) while umdrehen is the roation of the
long edge around the short edge...

Well changing it to umdrehen...