German grammar fixes

Signed-off-by: Sebastian Klaus <sebastian.klaus@aegiscare.com.au>
Merge pull request #140 from sebklaus/master

German grammar fixes
Much more comprehensive German translation including all options

Signed-off-by: Sebastian Klaus <sebastian.klaus@aegiscare.com.au>
Added missing commas and removed comments to create valid JSON files

Signed-off-by: Sebastian Klaus <sebastian@klaus.com.au>
Increased size of "Refresh" button to avoid ugly line break

Signed-off-by: Sebastian Klaus <sebastian@klaus.com.au>
make refresh button auto width