Is UTF-8 enough for all common languages?

Question

I just wanted to develop a translation app in a Django projects which enables registered users with certain permissions to translate every single message it appears in lates

Answer 1

UTF-8 can be used to represent all of Unicode, so it doesn't let you express all common languages. It allows you to express all languages.

If it seems as if some european characters aren't working, that's an encoding issue.