SystemUI: Make the HSPA+ drawables more consistent with the HSPA drawables

Though the older HSPA+ drawables are sharper, that makes them look
out of place in comparison with the HSPA drawables.

Change-Id: I76313ae0125b3a8fda928b240f33715e48f77867
Fix up notification led behaviour
Fix build
Option to show status bar in expanded desktop mode (1/2)