Fix text-mode rendering of object and Asana link views

Summary:
Ref T2852. Two issues:

  - Embeds (`T12`, `{T12}`) have some handle issues because handles run afoul of visibility checks under some configs. Make handles unconditionally visible.
  - Asana links don't render correctly into text mode. Give them a valid text mode rendering so they don't flip out.

Test Plan: Made comments with `T12` and `http://app.asana.com/...` and published them to Asana.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2852

Differential Revision: https://secure.phabricator.com/D6696

src/applications/doorkeeper/remarkup/DoorkeeperRemarkupRuleAsana.php

@@ -61,12 +61,16 @@ final class DoorkeeperRemarkupRuleAsana
         'id' => $tag_id,
       ) + $spec['tag'];
 
+      if ($this->getEngine()->isTextMode()) {
+        $view = $spec['href'];
+      } else {
         $view = id(new PhabricatorTagView())
           ->setID($tag_id)
           ->setName($spec['href'])
           ->setHref($spec['href'])
           ->setType(PhabricatorTagView::TYPE_OBJECT)
           ->setExternal(true);
+      }
 
       $engine->overwriteStoredText($spec['token'], $view);
     }

src/applications/phid/PhabricatorObjectHandle.php

@@ -231,7 +231,9 @@ final class PhabricatorObjectHandle
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
-    return false;
+    // NOTE: Handles are always visible, they just don't get populated with
+    // data if the user can't see the underlying object.
+    return true;
   }
 
 }

src/infrastructure/markup/rule/PhabricatorRemarkupRuleObject.php

@@ -26,11 +26,11 @@ abstract class PhabricatorRemarkupRuleObject
 
   protected function loadHandles(array $objects) {
     $phids = mpull($objects, 'getPHID');
-    $query = new PhabricatorObjectHandleData($phids);
 
-    $viewer = $this->getEngine()->getConfig('viewer');
-    $query->setViewer($viewer);
-    $handles = $query->loadHandles();
+    $handles = id(new PhabricatorHandleQuery($phids))
+      ->withPHIDs($phids)
+      ->setViewer($this->getEngine()->getConfig('viewer'))
+      ->execute();
 
     $result = array();
     foreach ($objects as $id => $object) {