Improve browsability of Almanac service datasource query
Summary: Ref T5750. Update the Almanac service query to be browsable.
Test Plan:
- Browsed and reordered Diffusion.
- Browsed and reordered services in Almanac.
{F373735}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5750
Differential Revision: https://secure.phabricator.com/D12433