Create fr_FR.js
Delete fr_FR.js
Create fr_FR.js

French translation package
Add Polish language package
Merge pull request #505 from AdwinTrave/master

Czech Translation
#505: Czech language package, thanks to @AdwinTrave
Merge pull request #503 from dlucazeau/FR-Translation

French package translation
#503: French language package, thanks to @dlucazeau
Merge pull request #507 from grzesiek/master

Add Polish language package
#507: Add Polish language package, thanks to @grzesiek