R1:8fe27800fcec

Don't show document types in search for uninstalled applications

Summary:
Fixes T4917. Currently, if a user doesn't have access to, e.g., Phriction, they still get a checkbox in the search results to search for Wiki Documents. Those results will be filtered anyway, so this is confusing at best.

Instead, bind PHID types to applications. This is a relatively tailored fix; some areas for potential future work:

- Go through every PHID type and bind them all to applications. Vaguely nice to have, but…