Changed 'Comment' to 'Clowncopterize' in Differential

Summary:
Back to the authentic roots.

Test Plan:
Verified that the button had the correct text in the UI.

Reviewed By: epriestley
Reviewers: epriestley
CC: epriestley
Differential Revision: 86

src/applications/differential/view/addcomment/DifferentialAddCommentView.php

@@ -85,7 +85,7 @@ final class DifferentialAddCommentView extends AphrontView {
           ->setValue($this->draft))
       ->appendChild(
         id(new AphrontFormSubmitControl())
-          ->setValue('Comment'));
+          ->setValue('Clowncopterize'));
 
     Javelin::initBehavior(
       'differential-add-reviewers',