Change (No Filtering) to be the default selected option.

Summary: Cleaning up my mess, (No Filtering) should be the default selected option in macros search form.

Test Plan: Go to /macro/query/advanced/ and verify that (No Filtering) is the default selected option.

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Maniphest Tasks: T3692

Differential Revision: https://secure.phabricator.com/D6715