Merge changes I6e5dc836,Ia0c663f0,I97eb6e79,I8a4a0213,I87798da9, ... into nyc-dev

* changes:
  Removed the group expand button
  Removed the bundle number from the header
  Fixed a crash with notification children
  Fixed a bug where the media header wasn't indented
  Fixed fading and dozemode for custom notifications
  Fixed a group bug with a single expanded child
  Fixed a bug where the top child notification wasn't expandable
  Fixed a bug where heads up where not expandable by touch
  Fixed a bug where the wallpaper was shining through the background