Add more columns to typeahead wire format debugging view

Summary: Fixes T4420. This isn't perfect but is one step less janky, at least.

Test Plan: Viewed debugging view at `/typeahead/class/`, no unlabeled columns.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T4420

Differential Revision: https://secure.phabricator.com/D9903