add Pinger class

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
add settings fragment

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
indent fix

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
add setings action bar entry

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>