Widen pinboard to 280x210.

Summary: This widens pinboard images to 280x210, which neatly fits on an iPhone 4, and gives more visual space to Macros and Mocks.

Test Plan: Test Pinboard in Chrome and iOS simulator.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5224

src/applications/files/controller/PhabricatorFileTransformController.php

@@ -49,6 +49,9 @@ final class PhabricatorFileTransformController
     $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
 
     switch ($this->transform) {
+      case 'thumb-280x210':
+        $xformed_file = $this->executeThumbTransform($file, 280, 210);
+        break;
       case 'thumb-220x165':
         $xformed_file = $this->executeThumbTransform($file, 220, 165);
         break;