Fixes to languages/pl.py file
Begining of Polish translation. Complete translation of Chapter 0 and
Chapter 1, without making changes of images, as yet.
Begining translation of chapter 02
Full translation of Chapter 02
?
Starting translation of Chapter 03
Small fixes in the content of Chapter 01, and 02. Full translation of
Chapter 03.
Merge branch 'master' into pl-translation
The start of translation od Chapter 04
Merge pull request #199 from abutronik/pl-translation

Pl translation in progress