Update german.lang

[xxmichibxx]

Please review my updated language file. I've edited the language file using Poedit. I've also tested the language file on a Wii console, so everything should be fine.

I would also like to add that I have kept the translated string size as minimal as possible. Additionally, I am familiar with technical terms, having been involved in other projects within the 3DS/Wii scene.

Changes:

• Added new translated strings
• Adjusted existing translated strings (typos etc.)
• Removed unused strings to reduce file size
• Removed strings that don't need to be translated (e.g. USB)

[eku]

Please check the button texts if they fit.

Standby => Bereitschaft Vollständiges Herunterfahren => Aus

[xxmichibxx]

Please check the button texts if they fit.

Standby => Bereitschaft Vollständiges Herunterfahren => Aus

Please use the updated german.lang file before reviewing. Standby is fine and more common; nobody really says "Bereitschaft".

[wiidev]

Please check the new translation files in a few days.