Touch up Audit/Commit List UI

Summary: Fixes a few issues. The author of the commit is more prominent / not cut off. Auditors is in a more consistent location. More space is available for reasons. Commits by themselves look much less janky. Only downside is actual Audits are now 3 lines vs. 2, but the extra space is used well.

Test Plan:
Test list of audits and commits.

{F309237}

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11817

src/applications/audit/view/PhabricatorAuditListView.php

@@ -152,10 +152,10 @@ final class PhabricatorAuditListView extends AphrontView {
         ->addAttribute($status_text)
         ->addAttribute($reasons)
         ->addIcon('none', $committed)
-        ->addByline($author_name);
+        ->setSubHead(pht('Author: %s', $author_name));
 
       if (!empty($auditors)) {
-        $item->addAttribute(pht('Auditors: %s', $auditors));
+        $item->addByLine(pht('Auditors: %s', $auditors));
       }
 
       $list->addItem($item);