Translation

This branch adds a German translation and fixes one missing declaration of a string that should be shown / translated.

The languages in locales.ini don't seem to be sorted, so I've just added the translation to the bottom - if you prefer it another way please tell me.

Note: I'm not really happy with the translation of "sure-delete", but I couldn't think of any better translation to conclude the sentence with the object name and a question mark :-)