First pass at detailed app data usage, policy.

Fragment to show application data usage details, including chart with
inspection ranges.  Button that invokes ACTION_MANAGE_NETWORK_USAGE
towards application, and UID-specific policy controls.  Fragment is
launched when clicking list items from data usage summary page.

Change-Id: Ie1564aa8af98e1a7083817a997059a5a7b1caa50
6 files changed