* Add new Polish translations
Introduced in commit 54cfda76ee
* add Polish translations for changes from commits d78ad756 to b9ae6607
Co-authored-by: Maurycy Zarzycki <maurycy@evidentlycube.com>
* add Polish translation
* tweak Polish translations to make certain things moree readable
primarily changed translation of "story river" to keep using the English
phrase, but also some other phraes that were awkward when I used the
translation
* add polish flag icon
* add polish translation notes
* replace 'ukryte tiddlery' with 'tiddlery-cienie'
Co-authored-by: Maurycy Zarzycki <maurycy@evidentlycube.com>