Apps: Add blacklist interface [1/2]

Include peek and floating mode implementations.
Applies to every floating mode launch way.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: Ica523625c9061cf9c8d6c3d7df4acf6a125c4ead

Conflicts:
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java
Fix for launch app in floating mode from recents

Change-Id: I216b02a60cd46b7fef49e04fe090169c4703bcb6
Keep app when opening floating window from recents panel

Start activity asynchronously by appending it to system's
message queue to let RecentsPanelView cleanly execute
dismissAndGoBack before the floating window gets started.

Change-Id: Ie9c74b9f0b39f3aee81c62246cdcae15de83ee0d