I'm not 100% about this but probably you can do something like this. Locate your selected qa-theme.php file and add the following function:
public function initialize() {
parent::initialize();
if ($this->template === 'question') {
$unaccentedRequest = qa_q_request(
qa_request_part(0),
$this->content['q_view']['raw']['title']
);
if ($unaccentedRequest !== qa_request()) {
qa_redirect($unaccentedRequest);
}
}
}
I'm assuming you're using v1.7.0+