Frameworks: Fix linked volume does not persist after reboot.

The controling boolean value must be set before updateStreamVolumeAlias
is called first time. Otherwise updateStreamVolumeAlias will assume
it is always false till user toggle it in settings again.

Change-Id: I53455249909fa6ad69fa0ea6930f9065e5a14fdf
Frameworks: fix possible NPE + and missing expandable panel

Steps to reproduce for NPE:
- go into volume style settings
- switch to disabled
- switch to expanded
- NPE and hotreboot

Fix:
Check if mStreamControls is initialized and if not lock it and do it.

Steps for expandable error:
- go into volume style settings
- switch to disable
- press one time the volume button
- change to expandable
- change the volume and press the expanded icon
- result is it does not expand and is empty due of the missing volume panels.

Fix:
- if it was changed from disabled to expanded be sure that the additional volume panels
are recreated.

PS:
- fix another exception

Change-Id: I58d63d34f831b6a6f60f6eddb3a07fc916d464f3
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>
Merge changes Iaf656f1a,I58d63d34,I53455249 into kk4.4

* changes:
  FaceUnlock: Check if faceunlock is disabled
  Frameworks: fix possible NPE + and missing expandable panel
  Frameworks: Fix linked volume does not persist after reboot.