General tabui fixes

* Remove unused code. SettingsView = bye little old dude!
* Fix recreation of notification panel each time (show / hide the view
instead of making a new one each time)
* The late call of controllers fixes battery issue

Conflicts:
	packages/SystemUI/res/layout/system_bar_notification_panel_title.xml
	packages/SystemUI/src/com/android/systemui/statusbar/tablet/NotificationPanel.java