Abstract access to DifferentialInlineComment behind a Query
Summary:
Ref T2222. See D6260.
Push all this junk behind a Query so I can move the storage out from underneath it.
Test Plan: Viewed home page, list view, revision. Made draft, looked at preview, submitted draft, viewed inline, replied to inline.
Reviewers: btrahan
Reviewed By: btrahan
CC: chad, aran
Maniphest Tasks: T2222
Differential Revision: https://secure.phabricator.com/D6262