Update de_DE.lang

All new things done. Now only the Arcade is left.
Also fixed some bugs after playtesting. More to come hopefully.
Update de_DE.lang

Improvmentupdate #1
Update de_DE.lang

Improvementupdate 1.1
Merge pull request #18 from Galaxy2Alex/master

Update de_DE.lang
Merge branch 'upstream/master'

de_DE.lang had been upgraded already

Conflicts:
	de_DE.lang