more German translation updates

I wrote a small and stupid tool to help finding untranslated stuff:
https://github.com/mmitch/PowerAuras/blob/tools/PowerAuras/translate.pl

Current statistics are:
```
languages found: deDE, esES, esMX, frFR, koKR, ruRU, zhCN, zhTW

language deDE:
   80 missing translations
    0 unneeded translations
    0 empty translations
   28 unchanged translations

language esES:
   54 missing translations
    0 unneeded translations
    0 empty translations
   16 unchanged translations

language esMX:
   52 missing translations
    0 unneeded translations
    0 empty translations
   18 unchanged translations

language frFR:
  318 missing translations
    1 unneeded translations
    0 empty translations
   32 unchanged translations

language koKR:
  380 missing translations
    8 unneeded translations
    0 empty translations
   22 unchanged translations

language ruRU:
  165 missing translations
    1 unneeded translations
    0 empty translations
   42 unchanged translations

language zhCN:
  329 missing translations
    8 unneeded translations
    0 empty translations
    9 unchanged translations

language zhTW:
  308 missing translations
    8 unneeded translations
    0 empty translations
    9 unchanged translations
```