Settings: fix force close when receiver is not registered

Change-Id: I7bc848770dea85946017ee135d88f068c14f38fb
Settings: fix messed up OwnerInfo layout

no idea who added that margin start, but it just looks ugly, to be true,
looks like my very first app i ever did.

Change-Id: Ideaa2dcfc7444b591086b71f9a18b03c6d7b9122
Settings: Don't crash if we pause too quickly

Notifier is unregistered in every case in pause.
However, if you close the Settings app too quick, the notifier
might not be registered at all, causing an IllegalArgumentException
during the unregistering.

Change-Id: I54141cbfc91d08c28ef524f4155b673ae8dee90e