Summary:
Ref T5833. I want to add SSH keys to Almanac devices, but the edit workflows for them are currently bound tightly to users.
Instead, decouple key management from users and the settings panel.
Test Plan:
- Uploaded, generated, edited and deleted SSH keys.
- Hit missing name, missing key, bad key format, duplicate key errors.
- Edited/generated/deleted/etc keys for a bot user as an administrator.
- Got HiSec'd on everything.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5833
Differential Revision: https://secure.phabricator.com/D10824
