R1:716bd4e4b41b

Improve lint/unit limit, sort, view all, collapse behaviors

Summary:
Ref T8096. Various tweaks here:

- Sort result lists by importance (even lint -- "errors first" seems better than "alphabetical by file", I think?).
- Do sane stuff with display limits.
- Add a "view all" view.
- Don't show a huge table of passing tests in Differential.
- Link to full results.

Test Plan: See screenshots.

Reviewers: chad, btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T8096…