Updated de_DE.lang, part 1
Finished Focus Upgrade text. (Part 2)
A little bit more... (Part 3)
Will continue tomorrow. (Part 4)
Misc Fixes (Part 5)

Wow, Thaumcraft has had a lot of typo fixes.
Almost done... (Part 6)
Done ! (Part 7)
Merge pull request #1379 from Vexatos/patch-22

Updated de_DE.lang