Update de_DE.lang

192-194: Translatet to German that doest sound great, so maybe dont change these, in German it would be "Mondverlies Ziegelsteinstiege", "Mondverlies Ziegelsteinwand", "Mondverlies Ziegelsteinstufe" what realy sounds terrible
335: ok, i just changed the german word for heat to a better fiting one
368: I changed the Message to "Attention! There is no Oxygen supply!"
541 - 576: Translated