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

src/applications/diffusion/controller/DiffusionBranchTableController.php

@@ -69,6 +69,7 @@ final class DiffusionBranchTableController extends DiffusionController {
           pht('Branches'),
           'r'.$repository->getCallsign(),
         ),
+        'device' => false,
       ));
   }