settings: fix quickpulldown summary and clean up code

on default value it showed left summary and code is to complicated

Change-Id: I0c3b2dbe3213beea707bdda2f2453c4f9c75dcae
settings: enable/disable lockscreenwidgets preferences

it is just nicer if the user can see which preferences are active
or not

Change-Id: Ia5f8c3884c747c0f17c50075842e861ab4de1020
Settings: IT translations

Change-Id: I167550ffdaf5ba30afd6f26e26d82f6b891d8db4