make transaction edits work

Summary: Fixes T3621. We had a fatal from a non-existent function. Also changes form to full width.

Test Plan: edited and it worked! looked better too!

Reviewers: epriestley, chad

Reviewed By: chad

CC: aran, Korvin

Maniphest Tasks: T3621

Differential Revision: https://secure.phabricator.com/D6571