More button grey conversions

Summary: Ran across a few straglers. Convert to the correct color.

Test Plan: grep for profile-image-button, check profile image selection page

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D18096

src/applications/files/controller/PhabricatorFileComposeController.php

@@ -82,7 +82,7 @@ final class PhabricatorFileComposeController
       $buttons[] = javelin_tag(
         'button',
         array(
-          'class' => 'grey profile-image-button',
+          'class' => 'button-grey profile-image-button',
           'sigil' => 'has-tooltip compose-select-color',
           'style' => 'margin: 0 8px 8px 0',
           'meta' => array(
@@ -102,7 +102,7 @@ final class PhabricatorFileComposeController
       $icons[] = javelin_tag(
         'button',
         array(
-          'class' => 'grey profile-image-button',
+          'class' => 'button-grey profile-image-button',
           'sigil' => 'has-tooltip compose-select-icon',
           'style' => 'margin: 0 8px 8px 0',
           'meta' => array(