frameworks: Active Display support (1/2)

Conflicts:
core/java/android/provider/Settings.java

Fix for fix ActiveDisplay (Emergency)

this an emergency fix for last patch was merger
using another logic to determine, when need to hide Statusbar and Navigationbar
we dont want systemui visibility reset if lockscreen still enable and ActiveDisplay force to Turn Off
Correct ActiveDisplay visibility when launch Ongoing Notifications
fix Back button navbar cant work on some conditions
since AD detect User Activity, we dont want to override UserActivity inside View, so do only if AD visibilty are Gone
also add patch to keyguard, do not reset if ActiveDisplay visibility Visible
taken from Lockscreen Notification by David L.-W <david.leppla.weber@gmail.com>

Change-Id: I29830ef0e02719bfc875dbf3fa4f659500ff7e30

Base: Fix ActiveDisplay problem

follow kitkat changes
fix ActiveDisplay never disabled after using turn off display option

Change-Id: I01ed603333f1f29d637ec7612ada3c6d19581c87

Base: ActiveDisplay check for Immersive Mode Enable

As we know, Immersive Mode will force StatusBar and NavigationBar to Hide
while ActivieDisplay always setSystemUiVisibility flags for Both if enabled,
and will cause a conflict for that flags
// how to reproduce bug:
// set ImmersiveMode enable
// set ActiveDisplay enable
// Turn Off screen, swipe to sensor, ActiveDisplay showing
// Turn Off screen again (using Power button)
// Turn On screen (using Power button)
// pull Quicksettings, disable ImmersiveMode from ImmersiveTile
// Turn Off screen again, swipe to sensor, ActiveDisplay showing
// unlock via ActiveDisplay
// voila.... random flags will be set into setSystemUiVisibility
// (sometimes navbar or statusbar or both are gone)
lets make ActiveDisplay check for ImmersiveMode enable/disable,
so ActiveDisplay will not always setSystemUiVisibility flags
if ImmersiveMode enable
also workaround fix for unknown icon (?) sometimes appears
(if Show All Notification enabled)
(based from user report at XDA thread, why they always report there not in JIRA :/)

Change-Id: I1349c377bcb5b2f17ac73382c405905ca303afa6