Add "Reveal Entire File" option to Diffusion

Summary: Clicks all the "Show All" links for you at the touch of a button.

Test Plan:
  - Used "reveal entire file" on revealable files.
  - Opened on already-visible files, got "entire file shown".
  - Used other menu options.
  - Used normal "show more" links.

Reviewers: btrahan, jungejason

Reviewed By: btrahan

CC: aran, epriestley, btrahan

Maniphest Tasks: T497

Differential Revision: https://secure.phabricator.com/D1331

src/applications/differential/parser/changeset/DifferentialChangesetParser.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * Copyright 2011 Facebook, Inc.
+ * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1313,8 +1313,9 @@ class DifferentialChangesetParser {
             'mustcapture' => true,
             'sigil'       => 'show-more',
             'meta'        => array(
+              'type'   => 'all',
               'ref'    => $reference,
-              'range' => "{$top}-{$len}/{$top}-{$len}",
+              'range'  => "{$top}-{$len}/{$top}-{$len}",
             ),
           ),
           'Show All '.$len.' Lines');