Pie: Add option to change pie's angle from the attach 2/2

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieMenu.java
Pie: let Chevron adapt itself from pie's angle.
>
> This make Chevron able to recreate the battery bar when the angle changes.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieMenu.java
Pie: set angle default to 12° (1/2)

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieMenu.java
Pie: Fix and easy recalculation for Chevron and Pie
Pie: updates (2/2)
-pie angle: fixes, cleaning and new value (Huge)
-pie size defaults
-strings updates
Pie: set Big as default for item gap (2/2)

Screen: http://goo.gl/aocZ7

Conflicts:
	core/java/android/provider/Settings.java

Change-Id: Ibb6557d2536925927b4219d00f5f2e5abb40175f

Conflicts:
	core/java/android/provider/Settings.java