Add transactions for installing/uninstalling applications
Summary: Fixes T11476.
Test Plan:
- Installed/uninstalled the Conpherence application
- Observed correct timeline stories
- Observed correct config in database
- Observed 404 for application page
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T11476
Differential Revision: https://secure.phabricator.com/D19339