PEEK: Clean tabs and whitespaces

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
PEEK: configurable pickup timeout (1/2)

- Allow the user to set different pickup timeout when a notification comes up through PEEK.

Change-Id: Ifcd2f13101dcf6973ebcf016bce5f5314e1ce04c

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationPeek.java
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