We need to be clear that QML/Qt Quick is not different from
Qt, it's different from Qt Widgets. This has been clarified.

Also, the QML tutorial was littered with QtQuick 1 code snippets
and references, so I've done my best to clean them all up.

Change-Id: I2e678b4ab53ba676047e80f71030cf61af148e05
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>