Settings: Add Quick pulldown support for Quick Settings panel config

Change-Id: Ia54fa85466f47ad5952b18e9316fb5133334463b
Settings: Fix Quick Settings panel settings FC when rotating device

Change-Id: I588c466dcdc22200e2169cd3e97aa13b5e2821b4
Settings: Add ability to reset Quick Settings panel to default

Change-Id: I968f8b01e82e39410d6b1fc8dacced05c011468b
Fix possible NPE

Change-Id: I9d7e9019c4caac6ab1e534ef7b6dc84d19400a8f