Quick Settings: Swipe to switch

Adds the ability to switch to/from Quick Settings, using a sideways
swipe gesture.

Video demonstration: http://www.youtube.com/watch?v=jZaDVBIFAuA
(Video for the initial Patch Set only)

Patch Set 2: Flip animation follows your finger
Patch Set 3: Fix commit message
Patch Set 4: Fix commit message (again)
Patch Set 5: Pin down the statusbar during swipe
Patch Set 6: Smooth out animation after releasing swipe
Patch Set 7: Swipe in any direction to switch views
Patch Set 8: Ensure the statusbar is properly pinned down
Patch Set 9: Fix logic and event handling issues
Patch Set 10: Refactor for readability
Patch Set 11: Limit swipe detection to the bottom bar

Change-Id: I3cab45f72fe3c5fa40d4631fc6a84ea7bfe51bd1

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
Navbar buttons spacing for Phablet UI

This patch trys to make spaces in navbar buttons to fit Google behaviour
for tablets (Nexus 7, Nexus 10).

PS2: Better values after some testing on Nexus 7
PS3: Previous solution isn't good

Change-Id: I1ea9c883c519641fd99a033a54a1dc29fd9d57bd
Signed-off-by: kecinzer <kecinzer@gmail.com>