Settings: Simplify some user code

This is still way too much boiler plate code for the task at hand.

Change-Id: Ia03bff3d6947ea6372e3f5d0217c116728742b74
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>