Update translation_de.ts
Merge pull request #28 from emjay-jz/patch-1

Update translation_de.ts
Remove <oldsource> tags as per discussion on raspberrypi/noobs@cf48b4f0b918fec227cc0769a7f797d0553823e1
Merge branch 'master' of https://github.com/raspberrypi/noobs into dev