[0.3.0] Polish translation

[andzoak]

I left old order of files, but almost all is translated.

Missing translation:
max-updates-per-frame=Max Updates Per Frame

I don't know how it works yet.

[kovarex]

Thank you for the fast update, I updated the game, and also added it to the polish translation repository:
https://github.com/kovarex/Factorio_Translation_Polish