Various improvements to german translation

Fixed typos, made some messages clearer
Increase timeout for reading exiftool pipe to 10 sec

Low values of timeout causes reading errors
Fix typos
Merge pull request #9 from pgeorgi/locale

Bunch of improvements to locales
Add hungarian translation from Ádám Majoros
Add Russian translation from Eugene Pazhitnov
Add type in timeout exit of Exiftool component