Fix two migration issues with Maniphest

Summary: The new editor saves tasks before applying transactions, so fields need default values.
Also, I goofed the table name.

Auditors: btrahan

resources/sql/patches/20130921.xmigratemaniphest.php

@@ -7,7 +7,7 @@ $rows = new LiskRawMigrationIterator($conn_w, 'maniphest_transaction');
 $conn_w->openTransaction();
 
 // NOTE: These were the correct table names at the time of this patch.
-$xaction_table_name = 'maniphest_transaction_pro';
+$xaction_table_name = 'maniphest_transactionpro';
 $comment_table_name = 'maniphest_transaction_comment';
 
 foreach ($rows as $row) {

src/applications/maniphest/storage/ManiphestTask.php

@@ -18,9 +18,9 @@ final class ManiphestTask extends ManiphestDAO
   protected $ownerPHID;
   protected $ccPHIDs = array();
 
-  protected $status;
+  protected $status = ManiphestTaskStatus::STATUS_OPEN;
   protected $priority;
-  protected $subpriority;
+  protected $subpriority = 0;
 
   protected $title;
   protected $originalTitle;