Refine global search UI for tokenizer functions
Summary:
Ref T4100.
- Removes the "with unowned" checkbox in favor of the "no owners" function.
- Support functions in "Authors" and "Owners".
Test Plan:
- Ran various global search and Maniphest queries.
{F379931}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4100
Differential Revision: https://secure.phabricator.com/D12523