Tweaks to page and mail titles

- Welcome page will now have title "Blender Foundation: Welcome",
  the same as in old projects.b.o.
- Mail will be sent from name of BF, not phabricator, seems to
  be quite logical to do.

src/applications/directory/controller/PhabricatorDirectoryMainController.php

@@ -81,7 +81,7 @@ final class PhabricatorDirectoryMainController
     return $this->buildApplicationPage(
       $nav,
       array(
-        'title' => 'Phabricator',
+        'title' => 'Blender Foundation: Welcome	',
         'device' => true,
       ));
   }

src/applications/metamta/storage/PhabricatorMetaMTAMail.php

@@ -397,7 +397,7 @@ final class PhabricatorMetaMTAMail extends PhabricatorMetaMTADAO {
               $mailer->setFrom($actor_email);
             } else {
               $from_email = coalesce($actor_email, $default_from);
-              $from_name = coalesce($actor_name, pht('Phabricator'));
+              $from_name = coalesce($actor_name, pht('Blender Foundation'));
 
               if (empty($params['reply-to'])) {
                 $params['reply-to'] = $from_email;