Created de_DE.lang

The QED meanings and tooltips will follow. (Find 17 different phrases consisting of the same 3 initials... This is so much fun...)

Just in case anyone cares: I chose "Trommel" as the translation for the Drum, because the less equivocal translation "Fass" is in modded MC mostly associated with Item storage, not Fluid storage (compare with "Barrels" from other mods).

Suggestions for improvements are highly appreciated!