R1:74a90999d86c

render_tag -> tag: phabricator_form, differential inline comment

Summary: Pretty straightforward.

Test Plan: Viewed inline edit on left / right and new /edit.

Reviewers: vrana

Reviewed By: vrana

CC: aran

Maniphest Tasks: T2432

Differential Revision: https://secure.phabricator.com/D4724