Set device to false for all pages which don't specify device readiness

Summary:
Ref T5446.

• For all callsites which do not specify a value, set false explicitly.
• Make true the default.

Test Plan: Used grep, then manually went through everything.

Reviewers: chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T5446

Differential Revision: https://secure.phabricator.com/D9687