SystemUI: Set Status bar opaque during drawer pulldown on tablets only

The status bar only needs to be set as opaque when the notification
drawer is pulled down on 600dp and 720dp devices. On phones, this
is unnecessary as the top header of the drawer covers the status
bar on the phone UI. This change makes a huge difference in
reponsiveness on devices that run the phone UI as there is no
longer a delay before the drawer appears when interacting with it
on an activity with transclucent window decor.

Patch Set 3: Fix formatting, adjust comment
Patch Set 5: Delete file derp

Change-Id: I932bb92a5245f0323d3317776efbdc9151db449d
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Don't let apps disable the SIM PIN entry screen.

As the user (who controls the app behaviour after all) likely doesn't
see the PIN screen as a lock screen (he likely wants telephony) and the
PIN screen is not shown on a timer-driven basis, it should be treated
specially.

Change-Id: I8d48ab5f097bc926f67eab5835d9b5f1e581db15
Don't recreate keyguard for MCC/MNC changes.

Change-Id: I9e5dfdb12df522dc7dd50c26f35aba26b1bbe44e
FaceUnlock: Check if faceunlock is disabled

JIRA: CYAN-3622
Issue: https://jira.cyanogenmod.org/browse/CYAN-3622

Change-Id: Iaf656f1aecb72610a46183294de25151e8df4b05
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>