FWB: Hover enable from Settings (1/2)

I don't like beeing terorized with halo icon in
expanded statusbar all the time.
Add a setting to AICP extras for Hover

Change-Id: Ie3feb8925ea21f429e7c6138e64d639d8a9a876c
FWB: Hover, notification timeout (1/2)

Change-Id: I645c68f6ae62ba363f00a0237ae7970982d60a39
Merge changes I645c68f6,Ie3feb892 into kitkat

* changes:
  FWB: Hover, notification timeout (1/2)
  FWB: Hover enable from Settings (1/2)