Other apps can use this interface by copying the AIDL files into their source
tree.

Todo: determine why some lookups of OBEPs can be null, and handle the null case
in the UI.

This does nothing. getRouterContext() is always null when onActivityResult() is
called. Todo: implement callback that fires when the Router has bound and the
Fragment has an Activity.

Addressbook Loader works (from previous commit). Todo: put name count
in list header.