Make items in in the image gallery not selectable

Change-Id: I9a6442c92b48ea28440cd0a65d189cf5ccf20e02
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Remove redundant code from image gallery example

Change-Id: If6f2c1b9473e94654d95879b5445d987176a7668
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>