Fix Drydock lease list view in redesign branch

Summary: Fixes T8655. This isn't actually a table -- just use setContent().

Test Plan: Loaded leases in redesign-2015.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T8655

Differential Revision: https://secure.phabricator.com/D13431