Settings: Add dslv controller for Slim features

a lot of our settings have drag swipe features
this is the central controller for it to have
easy access

NEED for Notifications Shortcuts i.e

PS2: Update Author & message
PS3: Rebase

Change-Id: I5c972e572078f054a7ce05f84a6c31b27b2db477
Merge "Settings: Add dslv controller for Slim features" into pac-4.4