Restore ProfileGroup notification override functionality

Also clean up a little.

JIRA: CYAN-3164
Change-Id: I9b71a225996315f517b59d2d6f4074175bbf2d64
Merge "Restore ProfileGroup notification override functionality" into cm-11.0
Better expose 'QS Tiles and layout' function

Reorganizing & customizing the QS tiles is one of our features, but it
is buried 4 clicks deep in Settings menus. This is not ideal.

Create a new icon on the main QS panel view to quickly launch into
the configuration page.

Screenshots: http://imgur.com/a/H3iN7

This respects all the existing flip animations and quick pulldown. Does not
interfere with the clear-all button either.

PS2: Rebase
PS3: Change intent
PS4: Add missing boolean
PS5: Whitespace & Use different icon
PS6: Address comments and add additional drawable densities
PS7: Fix reference to old drawable
PS9: Swap back to + icon
PS10: Typo

Change-Id: Ia715767ba2a7cfdd44b0fafa082877def6867440
Merge remote-tracking branch 'cm/cm-11.0' into HEAD

Conflicts:
	packages/SystemUI/res/layout/status_bar_expanded_header.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

Change-Id: I4de4df9f63f129dd4ac0149da26d6cc63e99cc36