Remove all "originalTitle"/"originalName" fields from objects

Summary:
Depends on D19012. Ref T13053. In D19012, I've changed "Thread-Topic" to always use PHIDs.

This change drops the selective on-object storage we have to track the original, human-readable title for objects.

Even if we end up backing out the "Thread-Topic" change, we'd be better off storing this in a table in the Mail app which just has `<objectPHID, first subject we used when sending mail for that object>`, since then we get the right behavior without needing every object to have this separate field.

Test Plan: Grepped for `original`, `originalName`, `originalTitle`, etc.

Reviewers: amckinley

Maniphest Tasks: T13053

Differential Revision: https://secure.phabricator.com/D19013

resources/sql/autopatches/20180207.mail.01.task.sql

···
+ALTER TABLE {$NAMESPACE}_maniphest.maniphest_task
+  DROP originalTitle;

resources/sql/autopatches/20180207.mail.02.revision.sql

···
+ALTER TABLE {$NAMESPACE}_differential.differential_revision
+  DROP originalTitle;

resources/sql/autopatches/20180207.mail.03.mock.sql

···
+ALTER TABLE {$NAMESPACE}_pholio.pholio_mock
+  DROP originalName;

src/applications/differential/storage/DifferentialRevision.php

···
     PhabricatorDraftInterface {
 
   protected $title = '';
-  protected $originalTitle;
   protected $status;
 
   protected $summary = '';
···
       ),
       self::CONFIG_COLUMN_SCHEMA => array(
         'title' => 'text255',
-        'originalTitle' => 'text255',
         'status' => 'text32',
         'summary' => 'text',
         'testPlan' => 'text',
···
 
   public function getURI() {
     return '/'.$this->getMonogram();
-  }
-
-  public function setTitle($title) {
-    $this->title = $title;
-    if (!$this->getID()) {
-      $this->originalTitle = $title;
-    }
-    return $this;
   }
 
   public function loadIDsByCommitPHIDs($phids) {

src/applications/maniphest/editor/ManiphestTransactionEditor.php

···
       'status' => '""',
       'priority' => 0,
       'title' => '""',
-      'originalTitle' => '""',
       'description' => '""',
       'dateCreated' => 0,
       'dateModified' => 0,

src/applications/maniphest/storage/ManiphestTask.php

···
   protected $subpriority = 0;
 
   protected $title = '';
-  protected $originalTitle = '';
   protected $description = '';
   protected $originalEmailSource;
   protected $mailKey;
···
         'status' => 'text64',
         'priority' => 'uint32',
         'title' => 'sort',
-        'originalTitle' => 'text',
         'description' => 'text',
         'mailKey' => 'bytes20',
         'ownerOrdering' => 'text64?',
···
 
   public function setOwnerPHID($phid) {
     $this->ownerPHID = nonempty($phid, null);
-    return $this;
-  }
-
-  public function setTitle($title) {
-    $this->title = $title;
-    if (!$this->getID()) {
-      $this->originalTitle = $title;
-    }
     return $this;
   }
 

src/applications/pholio/storage/PholioMock.php

···
   protected $editPolicy;
 
   protected $name;
-  protected $originalName;
   protected $description;
   protected $coverPHID;
   protected $mailKey;
···
       self::CONFIG_COLUMN_SCHEMA => array(
         'name' => 'text128',
         'description' => 'text',
-        'originalName' => 'text128',
         'mailKey' => 'bytes20',
         'status' => 'text12',
       ),

src/applications/pholio/xaction/PholioMockNameTransaction.php

···
 
   public function applyInternalEffects($object, $value) {
     $object->setName($value);
-    if ($object->getOriginalName() === null) {
-      $object->setOriginalName($this->getNewValue());
-    }
   }
 
   public function getTitle() {

src/applications/ponder/storage/PonderQuestion.php

···
     return parent::save();
   }
 
-  public function getOriginalTitle() {
-    // TODO: Make this actually save/return the original title.
-    return $this->getTitle();
-  }
-
   public function getFullTitle() {
     $id = $this->getID();
     $title = $this->getTitle();