Minor issues with the typeahead and tokenizers, particularly related to T4100 / T5750.
- Maybe add an option to hide closed/disabled results from browse view?
- Maybe add an object subtitle to the browse view (description for projects, explanation for functions, etc).
- Unique functions (like `viewer()`) order correctly in the browse view but should get the same ordering rules in the as-you-type dropdown view.
- The `priorityType` field should probably be unified with the `isUnique` field.
- Function tokens UI might be too subtle? See how it goes...
- Functions might be too confusing for new users? Adjust onboarding ramp-up speed if necessary.
- Action tokenizers (e.g., Maniphest Task -> Add CCs) don't have a `browseURI` so they don't get a browse button.
- `TypeaheadResult` and `TokenView` should almost certainly be the same class instead of separate, similar classes.
- When a `browseURI` is present, maybe add an option to the bottom of the as-you-type list like "More results..." that pops the browse dialog open with the query prefilled?
- The dropdown doesn't show colors, but maybe it should?