QtIFW

Force repaint of the wizard ui.

Fixes the "Next" button problem as reported by some of the
tester. Still we should figure out where the event gets lost.

Change-Id: I626b486ef220d33a89b9bd9cc8e3039dca171c9c
Reviewed-by: Niels Weber <niels.2.weber@nokia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>