Import QtQuick 2.2

Change-Id: Ifc9719ec6fbbd80b866c01eebc471d0ed121bd16
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
ButtonStyle: fix checked state

Restore checked state handling that was lost in fd8d7261.

Task-number: QTBUG-38143
Change-Id: Iec6598d5ddba449da16cfefa55b0d575d2563c47
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>