Add (German) descriptions to some exercises
Add (German) descriptions to some exercises

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branch : 1.1-dev

rolandgeider/wger,DeveloperMal/wger,petervanderdoes/wger,petervanderdoes/wger,petervanderdoes/wger,wger-project/wger,rolandgeider/wger,kjagoo/wger_stark,kjagoo/wger_stark,DeveloperMal/wger,kjagoo/wger_stark,kjagoo/wger_stark,DeveloperMal/wger,wger-project/wger,rolandgeider/wger,wger-project/wger,petervanderdoes/wger,DeveloperMal/wger,rolandgeider/wger,wger-project/wger