JS corrections don't disappear from vervoeging test after another question

[cmw0513]

If the user gets a question wrong, and the following question right, the corrections from the first question are still there when beginning the third question.

[lienvdsteen]

oops 🙈

[lienvdsteen]

I think what we need to do is, in this js add the line $('.error-message').html('');

function fade_out() {
  $('.icon-check').fadeOut().empty();
}

@cmw0513 does it also not work for the translations?

[lienvdsteen]

merged