Add q/a subheaders to ponder

Summary: Helps make it seem more q/a like and consistent.

Test Plan: Look at question

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7450

src/applications/ponder/controller/PonderQuestionViewController.php

@@ -160,6 +160,7 @@ final class PonderQuestionViewController extends PonderController {
       ->setCount($question->getVoteCount())
       ->setVote($question->getUserVote());
 
+    $view->addSectionHeader(pht('Question'));
     $view->addTextContent(
       array(
         $votable,
@@ -361,6 +362,7 @@ final class PonderQuestionViewController extends PonderController {
       ->setCount($answer->getVoteCount())
       ->setVote($answer->getUserVote());
 
+    $view->addSectionHeader(pht('Answer'));
     $view->addTextContent(
       array(
         $votable,