[SQUASH] Remove Peek [1/2]

fix
Revert "HeadsUp: option to launch in floating window (1/2)"

This reverts commit c74698546f7ce374bcff6396af25df464fb48713.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHelper.java
HeadsUp: Launch in floating window

Add some part of NotificationHelper
Credits to AOSPA team

Change-Id: I7001cebd69790b46b8dcfe9150c7ef104e5427a2

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java
HeadsUp: option to launch in floating window (1/2)

This commit also affects Hover

Change-Id: Ia8ffb4088f5b48b222a77ef486ba8b14e193c26f

Conflicts:
	core/java/android/provider/Settings.java
Frameworks: Add switch between Active Display and Lockscreen Notification