[SQUASHED] Lockscreen Notifications (1/2)

Following commits inside
AOSPAL/android_frameworks_base@3487cda
AOSPAL/android_frameworks_base@5873e99
AOSPAL/android_frameworks_base@7350e91
AOSPAL/android_frameworks_base@8d99eed
AOSPAL/android_frameworks_base@181110c
AOSPAL/android_frameworks_base@ce14cdd
AOSPAL/android_frameworks_base@3914e8d
AOSPAL/android_frameworks_base@32ec14f
AOSPAL/android_frameworks_base@6d2f41d
AOSPAL/android_frameworks_base@b758e16
AOSPAL/android_frameworks_base@6ba6fdb
AOSPAL/android_frameworks_base@b20bdc9
AOSPAL/android_frameworks_base@25f75c6
AOSPAL/android_frameworks_base@a74309e
AOSPAL/android_frameworks_base@5b6e143
AOSPAL/android_frameworks_base@e9dcb99
AOSPAL/android_frameworks_base@4caa49c
AOSPAL/android_frameworks_base@0f2377c
AOSPAL/android_frameworks_base@7e75b49
AOSPAL/android_frameworks_base@bc6c83f Thanks @Der-Schubi
AOSPAL/android_frameworks_base@8fd230d
AOSPAL/android_frameworks_base@e05eba6
AOSPAL/android_frameworks_base@082774a (Partialy ported - Removed codes of clear notifications navbar button)
AOSPAL/android_frameworks_base@a6f92e5
AOSPAL/android_frameworks_base@c3d76f5
AOSPAL/android_frameworks_base@5b1d884
AOSPAL/android_frameworks_base@0c0b133
AOSPAL/android_frameworks_base@73a6b7d

Change-Id: I6f674da28c53863d5103a5822539f268dc9096c4

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
	packages/Keyguard/src/com/android/keyguard/KeyguardViewMediator.java
	services/java/com/android/server/NotificationManagerService.java