CMSDK: add duration for priority/quiet mode

Add setZenModeWithDuration API call with long durationMills
Use NotificationManager.setZenMode with Condition URI
specifying end time.
Update settings/CMPartnerInterfaceTest
TODO: unit test to be added in:
tests/src/org/cyanogenmod/tests/settings/unit.

FOR-156

Change-Id: I18dd661fc07419a7019b6372e81df430a70f86e9