Make "%LO" and "%LA" more readable when there is only one subclause
When there are two or more clauses, continue to render WHERE ((2 > 1) AND (3 > 2) AND ...).
Test Plan: Looked at query log in DarkConsole, saw more readable queries.
Reviewed By: amckinley
Maniphest Tasks: T13217
Differential Revision: https://secure.phabricator.com/D19788