Create de_DE.lang

These mods here are your first translated mods? That's rather impressing, because you actually provide very good translations, they're well done, (except for this part here) you actually used correct grammar and punctuation, something rarely seen on github, unfortunately (I've had many problems with this in the past, especially with the Thaumcraft 4 localization).
Anyways, as you can see [here](http://minecraft-de.gamepedia.com/Mod), both terms are used very oftenly, since it is a formerly uncommon English word in the German language. However, as a translator you should set a good example to everyone doing it wrongly, so please change this one word.