Summary:
This is straightforward, except that `form.submit()` does not call onsubmit handlers. Create a `didSyntheticSubmit` event and have everything which listens for form submits listen for it too.
Fixes T704.
Test Plan: Hit control + enter in inline comments, main commetns, Pholio, conpherence. Verified it triggered appropriate JS (workflow / special behaviors).
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T704
Differential Revision: https://secure.phabricator.com/D4704
bc5617954a