No recent apps: use white, not holo blue light.
Follow new UI changes
base: added screenshot delete action in notifications

allows deleting a screenshot from the notification
inspired from CarbonRom - initial from CM I guess

Change-Id: I67b7b9a7808ddb8c54ea4f3a45aad6d44833e1df
clear all recents button
Let us move the clear recent to the bottom corner for convenience.

Change-Id: I538af0e7d8d75985941e9542375211090d974df8