R1:f2ed56147d02

Use application handle infrastructure for Releeph Requests and Releeph Projects

Summary: Ref T2715.

Test Plan: Used `phid.query` to query handles. Browsed Releeph.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6510