Bug 838793 - Part 1: Convert AboutHomeContent to a Fragment. r=lucasr a=akeybl
Bug 838793 - Part 2: Move AboutHome update to foreground thread. r=lucasr a=akeybl
Bug 863803 - Part 1: Prevent multiple AboutHome fragments from being created after restore. r=lucasr a=akeybl
Bug 863803 - Part 2: Remove unneccesary call to hideAboutHome(). r=lucasr a=akeybl