frameworks/base: german translation

PS1: some fixes plus additional translations
PS2: remove accidentally added strings from AOSPA-legacy
PS3: let's call it "Leuchte" und "Vollbild"
PS4: forgot "aus"
PS5: hyphenation
PS6: commit message updated
PS7: make new line sure and remove "empfohlene"

Change-Id: If754944bb4d8eda578bf21fb7ac63dcef66d2c9d