Frameworks: Lockscreen Blur

  If user selects "See through" under screen security,
  the locksceen background will now appear transparent
  with the content behind it blurred.

Modificaitons made to the orginal commit to support Hammerhead and Flo.
It seems full HD images causes rendering artifacts. To prevent this,
we scale the image size to something more manageable.

PS2: Reduce calls to System.Settngs
     Move bitmap scaling to DisplayPowerController
PS3: Fix styling
PS4: Fixes: 1. Black wallpaper after turning off see through
            2. Wallpaper flicker on unlock when blur is enabled
PS5: Ignore status bar and nav bar when capturing screenshots
PS6: 1. Remove content observer and unnecessary calls from viewManager
     2. Restructure the flow of setting the custom image
         * now closely follows setting album art as lockscreen image

Fix: Ensure lockscreen see through setting persists after reboot

If see through was enabled and the device was rebooted,
the user had to toggle the setting off and on again to activate.

Change-Id: I651a843241d2a0fa8f0f41e5c6b4415012d1635a

Keyguard: smooth background change.

Change-Id: Ia0e4d0000db72b5cdb6fede03791805e34fa311d

Fix: resolve black screen caused by lockscreen blur revert

Change-Id: Iaea865bbbcd81caf699b6c282da84816f7a4378a
Keaguard: enable translucent keyguard by default

currently it is possible to enable it per device over an overlay and it is disabled
by default. Enable it by default but respect general transluscent disable from
device tree. Manta eg disables this feature due of graphical glichtes.

Change-Id: I3579d47ee3bee05719ef357ffcf19c0137b2302f
SystemUI: Always show translucent decor on recents panel

Change-Id: Id3e371f841b065ba6ac7693d96b38504354b4fd9
Fix: Lockscreen Blur Rotation

Credits to David L.-W (David96)
https://github.com/AOSPAL/android_frameworks_base/commit/f80b748

Modifications made to address the issues noted in original commit

Change-Id: I721e7f8554433b903209da5587ac1dfcd83420cd

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
Lockscreen Blur: fix for coverflows
Lockscreen Blur: Allow setting blur radius (1/2)
Base: Lockscreen blur enhancements

Changed base for lockscreen blur to AOSPAL

Thanks to Kyrylo Mikos <kiril.mik.os@gmail.com>

Change-Id: I9bf0f37b99d2277f1e62c3a108ad51c5e340b711
Don't show wallpaper if lockscreen blur is enabled
Fix possible NPE

Fix null pointer error as reported on Jira
https://paranoidandroid.atlassian.net/browse/AOSPA-218

Change-Id: I7929a518b49ba25ac97f4e184a21da427d5aa70c

Conflicts:
	services/java/com/android/server/power/DisplayPowerController.java