R1:0282ce74ab8c

Flesh out Conduit types for Paste search fields

Summary: Ref T9964. This fills in types and descriptions for ApplicationSearch fields in Paste.

Test Plan:
Got this nice table now:

{F1023999}

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9964

Differential Revision: https://secure.phabricator.com/D14765