Floating Window: Welcome back

* Port squashed jellybean floating window to kitkat.

Floating window contributors:
@drcmda
@beerbong
@D4rKn3sSyS

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

Merge notification manager service changes.

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

Change-Id: If3d6338f657915754bd6cb9cb987df62c17aa6d0

Conflicts:
	services/java/com/android/server/am/ActivityStack.java
PEEK [1/2]

Sensors are fully disabled when screen is on. When you turn the screen off,
it will start polling both gyroscope and proximity sensor values. If it detects
using the gyroscope sensor that device is lying on a table, it disables proximity
polling. If it detects with proximity sensor that it is in your pocket, it disables
gyroscope polling. This way, we save some battery from the beginning. Later, when you
receive a notification, it enables a partial wakelock (CPU on but at low frequency),
and starts listening for movement, either from getting it out your pocket or lifting
off from the table. If it detects those events, it will turn on screen and show the notification.
Wakelock timeouts on 10 secs, so if you receive a notification and there is no movement in that time,
sensors will stop polling after that time, disabling peek interaction until a new notification comes.
Peek doesn't process low and min priority notifications.

https://plus.google.com/+ParanoidAndroidCorner/posts/3wppxakBSVR

Contributors:
@D4rKn3sSyS
@Anu6is
@BigBrother1984

Signed-off-by: Jesus David <jesdga95@gmail.com>
Signed-off-by: Curtis Mayers <curtis.mayers@gmail.com>
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Conflicts:
	packages/SystemUI/res/values/pa_dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
PEEK: Clean tabs and whitespaces

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
PEEK: Beautify bridging layers code

* Save new instances for Peek and PowerManager:
    Create it only in BaseStatusBar when start() method is called. That one
    will be passed throught the sub layers such like new helper class so another
    feature can check Peek state invocking from NotificationHelper class.
* Move phone listener to new helper class.
* Do not show Peek on sim pin lock screen.
* Process new incoming notifications only if screen is off, keep updating notification array separately.
* General cleanup.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: I9efde073df35b92e42b9faa9930d2fc39b3a43b9

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
PEEK: Sensors improvements

- Bring some fixes to the algorithm thanks to @D4rKn3sSyS
- Cleanup

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Cleanup