Improve Ponder on Mobile

Summary: Ponder was pretty unusable on mobile, I fixed most of the issues and ran some pht's as well.

Test Plan: Use Ponder //shudder//

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5977

src/applications/ponder/controller/PonderQuestionViewController.php

@@ -94,7 +94,8 @@ final class PonderQuestionViewController extends PonderController {
       $nav,
       array(
         'device' => true,
-        'title' => 'Q'.$question->getID().' '.$question->getTitle()
+        'title' => 'Q'.$question->getID().' '.$question->getTitle(),
+        'dust' => true,
       ));
   }