Added screen orientation handling and configuration page.

Now Page effect is turned off by default. And can be turned on in
configuration page. Also some polishing related to build example
on PC was added and application color pallete updated.

Change-Id: I85248a5e152b749396025b11d4bd88a3ca8b796a
Reviewed-by: Jarosław Staniek <staniek@kde.org>
Reviewed-by: Tomasz Olszak <olszak.tomasz@gmail.com>
Added sensor-checker example

Change-Id: I8d21a8fb541be9317bfe5633f70444cdd7598bb1
Reviewed-by: Jarosław Staniek <staniek@kde.org>
Reviewed-by: Tomasz Olszak <olszak.tomasz@gmail.com>