R1:85bf04ea0292

Use EditEngine for AlmanacDevice

Summary: Ref T10449. Modernize the AlmanacDevice code a bit.

Test Plan:
- Created a device.
- Edited a device.
- Listed devices.
- Viewed a device.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10449

Differential Revision: https://secure.phabricator.com/D15399