Control bedtime notification vibration

From Yigal on 2016/05/02 22:27:06 +0000

The current vibration pattern (3 long vibrations) is quite annoying, it should be gentle like regular message notifications, or better yet let the user choose

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/13703757-control-bedtime-notification-vibration