Slightly modernize Aphlict server status page
Summary:
Ref T4324. Add a real Application class. Use modern UI elements.
@chad, we could use an icon :3
Test Plan: {F114477}
Reviewers: chad, btrahan
Reviewed By: chad
CC: chad, aran
Maniphest Tasks: T4324
Differential Revision: https://secure.phabricator.com/D8254