Lockscreen Blur

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

PS2-6 : remove whitespaces
PS10  : Link blur to see through lockscreen option
PA12  : Lets actually push some changes this time :)

Change-Id: Iac581536057ef6b8eb4637b1172291f47463a065

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java

Fix code style

Change-Id: I0aedc35e0ecaeb13d33a81030a52fe25b4a23f33

fix

fix

fix part2

Lockscreen Blur: fix old nav/status bar shining through on lockscreen

KeyguardViewManager: use cached see through setting

When merging PA remote repo, please keep in mind not to use "isSeeThroughEnabled()" but "mSeeThrough".

ALL FIXED - htchoi1995