Add inline comments to the web view of Diffusion / Audit
Summary: Depends on D1928. Uses the new UI element to display inlines in Diffusion.
Test Plan: Looked at a commit with inline comments, saw them in the summaries.
Reviewers: davidreuss, nh, btrahan
Reviewed By: davidreuss
CC: aran, epriestley
Maniphest Tasks: T904
Differential Revision: https://secure.phabricator.com/D1929