Added Polish language to i18n configurations.#3739

Ryszard-Trojnacki wants to merge 3 commits intoLiteFarmOrg:integrationLiteFarmOrg/LiteFarm:integrationfrom

Lukasiewicz-Instytut-Lotnictwa:feature/ILOT-4-polish-translationLukasiewicz-Instytut-Lotnictwa/LiteFarm:feature/ILOT-4-polish-translationCopy head branch name to clipboard