Add a book controller and various amenities to Diviner's live view
Summary: Ref T988. Mostly backend changes, with a very rough frontend on top of them. See Conpherence discussion.
Test Plan: {F45010}
Reviewers: btrahan, chad
Reviewed By: chad
CC: aran
Maniphest Tasks: T988
Differential Revision: https://secure.phabricator.com/D6113