fb: add back small bottom margin 1px

2px was to much 0 was to less.....1 seems to be perfect

Change-Id: Iefa3aee39197786da1652c3b372aa46c0ea3a6dc
Keyguard: fix statusbar lags when default widget shown.

When statusbar became expanded KeyguardStatusView receives
onKeyguardVisibilityChanged callback and refreshes ClockView.
Because it receives more than one call and every time it reads
new values from resources it cause lags in opening statusbar panel.

Replace this code with BroadcastReceiver and ContentObserver to
refresh it only in case something was changed.

Change-Id: If0dbc1db059536806852661931cb2e6436f2acf4
fb: post time-critical systemui flags to window manager

thanks Kiril for this suggestion. We are already using window
manager for other things in immersive mode....so nice addition
to fix a race condition

Change-Id: I5d818214d7864014fa77c0d562d2908110d93303

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
	services/java/com/android/server/wm/WindowManagerService.java