[Touch example] Changed TitleBar text.

Change-Id: Id81865271258b9ce8e9047f90f8c59b309d0d95d
Reviewed-by: Tomasz Olszak <olszak.tomasz@gmail.com>
[sensors-checker example] Fixed usage of gravity sensor.

Change-Id: Ida4a1a838a491b8abc2e84576b83b9f375e9e238
Reviewed-by: Tomasz Olszak <olszak.tomasz@gmail.com>