QtIFW

Fixes QTIFW-6.

"Update Info:" should be only visible in updater mode and
only if there is some text to display.

Change-Id: I81e7c0cc0a5532026f63d64ae8529f945884b328
Reviewed-on: http://codereview.qt-project.org/4558
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>