Nexus 7 animations

Change-Id: I1ce56a7e5d575f007dda559f7cb975221c3b651c
ScreenShot QuickTrash

Conflicts:

	core/res/res/values/symbols.xml
	packages/SystemUI/src/com/android/systemui/screenshot/GlobalScreenshot.java

Signed-off-by: iGio90 <giovanni.rocca.90@gmail.com>