Use property tabs in Files

Summary:
See screenshots. Some simplifications:

  - Tabbed and non-tabbed lists are now allowed to be mixed. We just make the non-tabbed lists permanent and put them on the bottom (e.g., image and audio data in Files).
  - You can provide a tab name instead of an entire tab object and we'll build an object for you.
  - We respect `setSelected()` on the tab objects now.

Test Plan: See screenshots.

Reviewers: chad, btrahan

Reviewed By: chad

CC: chad, aran

Differential Revision: https://secure.phabricator.com/D7362

src/applications/files/storage/PhabricatorFile.php

@@ -725,22 +725,6 @@ final class PhabricatorFile extends PhabricatorFileDAO
     return $this;
   }
 
-  public static function getMetadataName($metadata) {
-    switch ($metadata) {
-      case self::METADATA_IMAGE_WIDTH:
-        $name = pht('Width');
-        break;
-      case self::METADATA_IMAGE_HEIGHT:
-        $name = pht('Height');
-        break;
-      default:
-        $name = ucfirst($metadata);
-        break;
-    }
-
-    return $name;
-  }
-
 
   /**
    * Load (or build) the {@class:PhabricatorFile} objects for builtin file