updated german translation
Merge branch 'master' of https://github.com/HeikoAdams/Tiny-Tiny-RSS
Merge branch 'master' of git://github.com/HeikoAdams/Tiny-Tiny-RSS into HeikoAdams-master

Conflicts:
	locale/de_DE/LC_MESSAGES/messages.mo
	locale/de_DE/LC_MESSAGES/messages.po
rebase translatiosn