[Tails-l10n] (review)[de] index.de.po

Hi,

i'm new to this list and to translating stuff via git. i tried to follow
the instructions on the web page.

to get to know the workflow, i translated some strings on index.de.po,
please review
https://gitorious.org/muri/tailstl.git
branch: de-index
commit: 08b4e28 translated missing link strings

cheers,
muri