Merge pull request #22 from jasonni/master

fix error string
Update full_description.txt
Update full_description.txt
Update full_description.txt
Update short_description.txt
Update full_description.txt
Update strings.xml
inial version of slovak translation
slovak translation. Added short and long descriptions
Update strings.xml
Update short_description.txt
add german translation
short text change according text length limit
Improved german translation
Update strings.xml
Improved german translation again
fixed typos
Update strings.xml
Update strings.xml
various typos fixes after checking of screenshots