I installed elementary OS Freya (in Polish), fully updated it and then used the language plug to fully install Polish language. I might've accidentaly changed language to English. Then I log out, logged in and elementary OS asked me if I want to change the default folder names to the new language. I pressed "Yes" and... "Don't ask me again". Then I noticed what I have done: I changed my Polish named folders like "Pobrane" to English ones: "Downloads".
I changed the language back to Polish but I didn't get asked about the folders this time. So I'm stuck with Polish language with English folders which means that for example: Midori can't download files. As it tries to download them to folders that don't exist.
Is there any way to force elementary OS to change the folders again?
I tried to do it manually but if I change the names they lose their nice folder icons and they are removed from the favorites menu in Files. I attached a screenshot. You can take a look at "Documents" vs "Dokumenty".