Align the status bar date to the bottom

As in AOSP. Also occupy the whole height area so that the date can be
easily clicked.

Change-Id: I66e5b7a754f27571f987657cc7ccd2ef3bef3f9e
Remove HAVE_SELINUX guards

Android 4.3, and by extension CM 10.2, default to having SELinux on

Change-Id: I0f83c0b9712388216b89dfbe6184ad0a220a74d6
TabletUI: Fixed notification panel margins
StatusBar: Remove extra dp added by 4.3

Restore right space between quick settings button and halo/clear-all ones
Conflicts:

	packages/SystemUI/res/layout/status_bar_expanded_header.xml
DateView: Restore AOSP behaviour for 4.3 (remove unused stuffs, related code is changed and needs different way to show date on two lines)

Conflicts:

	core/res/res/values/donottranslate-cldr.xml
	packages/SystemUI/res/layout/pie_expanded_panel.xml
	packages/SystemUI/res/layout/status_bar_expanded_header.xml