Add "Clear All drawables" for NavBar

This is a part of "Recents: Clear all button for recent apps." from PA

Only for show in Lockscreen when are notifications

PS2: Update author & message
PS3: Damn damn I put the drawables in the wrong place...
PS4: Added missing import

Change-Id: I9164ef632d7d7bc31d81bb7a6d87c5d1562d5410
Signed-off-by: hany <hany.alsamman@gmail.com>

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
FW: LS Notifications: Add "Show all notif" NavBar Button

from: https://github.com/AOSPAL/android_frameworks_base/commit/4325a110af58e6b1c7e1005a9f1f2576bbad5e60

PS2: message & Author update
PS3: Rebased & remove unrelated changes

Change-Id: I67456db4f9728fefbabc9da9c290d070021705b4

Conflicts:

	packages/Keyguard/src/com/android/keyguard/KeyguardViewMediator.java
	packages/SystemUI/res/layout/navigation_bar.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
Notification:  Lockscreen Notifications: dismiss all button, improve animations, cleanup

Change-Id: Ia8ac73e2753d61a2856c5cee8d38e3a090a0e73d

Conflicts:

	packages/SystemUI/res/layout-sw600dp/navigation_bar.xml
	packages/SystemUI/res/layout/navigation_bar.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
Notificaitons: fix show/hide of show all button

& fix endless SystemUI FC when SystemUI is Killed

Change-Id: I1bcb11ea09979bfe2c72beb260e8e78124c4c86d
Signed-off-by: hany <hany.alsamman@gmail.com>

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
Notififications: Fix NPE

Change-Id: I8cd547abf384098aa33d53312815f84cd3ee6479
Signed-off-by: hany <hany.alsamman@gmail.com>
Notifications: try to fix occasionally SystemUI FC on boot

Change-Id: If21f3810444919a36a5ad2ce9027c9cfb0c71ba1
Signed-off-by: hany <hany.alsamman@gmail.com>