R1:a06704002445

Update Macro for Modular Transactions

Summary: Overall, seems to work ok.

Test Plan:
- Add a Macro
- Edit Macro
- Use Macro
- Disable Macro
- Re-enable Macro
- Attach Audio
- Set Audio to loop
- Annoy cats

{F4932069}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D17813