SystemUI: Add a new way for HALO Button

move notification header halo switcher to notification panel
add text syle halo switch button
hide (emergency calls only) text from notification panel
halo button pb support

before : https://dl.dropboxusercontent.com/u/62249445/_20140310_034542.JPG

after  : https://dl.dropboxusercontent.com/u/62249445/_20140310_041719.JPG

Conflicts:
	packages/SystemUI/res/drawable-hdpi/ic_notify_halo_normal.png
	packages/SystemUI/res/drawable-hdpi/ic_notify_halo_pressed.png
	packages/SystemUI/res/drawable-xhdpi/ic_notify_halo_normal.png
	packages/SystemUI/res/drawable-xhdpi/ic_notify_halo_pressed.png
	packages/SystemUI/res/layout/status_bar_expanded_header.xml
	packages/SystemUI/res/values/rr_strings.xml