Framework: Bring Long press back kill app toast back

It is now supported thanks to pawitp commiting the context fix for
displaying framework toasts

Change-Id: I8ab1beb49fc3b61355de8bc207482e2f51ff3e2a
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