Clean up parentDomain issues in PhameBlog

Summary: Ref T9360. These weren't getting set properly, also make them nullable since they're optional.

Test Plan: run upgrade, make a new blog with and without a parent domain. Edit a current blog.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9360

Differential Revision: https://secure.phabricator.com/D16242

resources/sql/autopatches/20160706.phame.blog.parentdomain.2.sql

@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_phame.phame_blog
+  MODIFY parentDomain VARCHAR(128) NULL COLLATE {$COLLATE_TEXT};

resources/sql/autopatches/20160706.phame.blog.parentsite.1.sql

@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_phame.phame_blog
+  MODIFY parentSite VARCHAR(128) NULL COLLATE {$COLLATE_TEXT};

src/applications/phame/editor/PhameBlogEditor.php

@@ -66,6 +66,7 @@ final class PhameBlogEditor
       case PhameBlogTransaction::TYPE_DESCRIPTION:
       case PhameBlogTransaction::TYPE_STATUS:
       case PhameBlogTransaction::TYPE_PARENTSITE:
+      case PhameBlogTransaction::TYPE_PARENTDOMAIN:
       case PhameBlogTransaction::TYPE_PROFILEIMAGE:
       case PhameBlogTransaction::TYPE_HEADERIMAGE:
         return $xaction->getNewValue();

src/applications/phame/storage/PhameBlog.php

@@ -48,8 +48,8 @@ final class PhameBlog extends PhameDAO
         'description' => 'text',
         'domain' => 'text128?',
         'domainFullURI' => 'text128?',
-        'parentSite' => 'text128',
-        'parentDomain' => 'text128',
+        'parentSite' => 'text128?',
+        'parentDomain' => 'text128?',
         'status' => 'text32',
         'mailKey' => 'bytes20',
         'profileImagePHID' => 'phid?',