Pontoon: Update German (de) localization of MDN
Pontoon: Update German (de) localization of MDN

Localization authors:
- Michael Köhler <michael.koehler1@gmx.de>

jwhitlock/kuma,SphinxKnight/kuma,Elchi3/kuma,safwanrahman/kuma,safwanrahman/kuma,jwhitlock/kuma,a2sheppy/kuma,SphinxKnight/kuma,escattone/kuma,safwanrahman/kuma,escattone/kuma,jwhitlock/kuma,SphinxKnight/kuma,Elchi3/kuma,Elchi3/kuma,yfdyh000/kuma,jwhitlock/kuma,a2sheppy/kuma,a2sheppy/kuma,mozilla/kuma,Elchi3/kuma,Elchi3/kuma,yfdyh000/kuma,mozilla/kuma,yfdyh000/kuma,SphinxKnight/kuma,yfdyh000/kuma,yfdyh000/kuma,jwhitlock/kuma,mozilla/kuma,SphinxKnight/kuma,mozilla/kuma,mozilla/kuma,escattone/kuma,safwanrahman/kuma,safwanrahman/kuma,a2sheppy/kuma,SphinxKnight/kuma,a2sheppy/kuma,safwanrahman/kuma,yfdyh000/kuma