Add table icon to remarkup spritesheet

Summary: See D3730.

Test Plan: Looked at sprite.

Reviewers: vrana

Reviewed By: vrana

CC: chad, aran

Differential Revision: https://secure.phabricator.com/D3731

scripts/celerity/generate_sprites.php

@@ -248,6 +248,7 @@ $remarkup_icons = array(
   'tt',
   'ul',
   'help',
+  'table',
 );
 
 foreach ($remarkup_icons as $icon) {