Divide questions in Polish translation by feminine and masculine pronouns

[robert-orlinski]

Hey @kepano!

Thank you for creating this repo along with all the work you do!

This PR introduces 3 groups of changes to the Polish translation:

1. Adds 2 separate sections with feminine and masculine pronouns. Previously it wasn't pleasant to read them when all of the pronoun instances were like you would have "actor/ress" in English.
2. It changes some questions in a way that fits the Polish language better, instead of being translated literally (here one request related at the end of this message 🙏).
3. Fixes some typos.

Regarding the second point - what did you mean by "33. Who is your hero of fiction?" in the questions for every decade? Someone's favourite hero of fiction, the one they identify with, or something else?

When you will be able to answer, I will update update this question accordingly because right now it's translated literally and it can be hard to understand without the dose of cultural insight you had when writing it in English 😄