R1:c7bcecb9b0e9

Use ApplicationTransactions for Releeph product activity

Summary:
Ref T3549. Ref T3663.

- Use transactions for activate/deactivate.
- Rename some "project" -> "product".

Test Plan:
- Activated products.
- Deactivated products.

{F135480}

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T3663, T3549

Differential Revision: https://secure.phabricator.com/D8634