Merge pull request #12 from mmBs/master

added three new strings to Polish translation
Update strings.xml
Update strings.xml
Update strings.xml
added three missing strings
added three new placeholder strings
added three new empty placeholder strings
added missing Hebrew description files
added three missing placeholder strings
update achievements in Romanian translation
Update strings.xml
Update strings.xml
Fixed a couple of mistakes
Merge pull request #13 from Egorand/master

Fixed a couple of mistakes and inconsistencies
added missing string
Added missing translations and shaped up older ones.
Update full_description.txt
Update strings.xml
Update strings.xml
Update strings.xml