Adding zen mode condition dialog

So that when you turn on priority or none in settings, you can
select the end condition.

Depends on framework changes: I9300af4f8b6d80042452b75db3418b20c5c5cc81

Bug: 15454830
Change-Id: I7856beabdd54de2ef10fa5c3d38bf27f36014693
3 files changed