When importing HotPotatoes quizzes, problem with non-ascii characters in response.

When importing a question in the HotPotatoes format, non-ascii characters in the response part will not get converted, but passed on as html entities. Correct answer "prøve" will be "prøve" in the resulting quiz question.

This only applies to import of questionsto the question bank in the HotPotatoes format (.xml), and not to HotPotatoes exercises added as .htm files.