create-mailbox.php:

- use smtp_get_admin_email() instead of the admin's username as sender
  for the welcome mail

This fixes 
http://sourceforge.net/tracker/?func=detail&aid=2958684&group_id=191583&atid=937964
reported by mrfrenzy on IRC


git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@1197 a1433add-5e2c-0410-b055-b7f2511e0802

create-mailbox.php

@@ -215,7 +215,7 @@ if ($_SERVER['REQUEST_METHOD'] == "POST")
          if ($fMail == "on")
          {
             $fTo = $fUsername;
-            $fFrom = $SESSID_USERNAME;
+            $fFrom = smtp_get_admin_email();
             $fSubject = $PALANG['pSendmail_subject_text'];
             $fBody = $CONF['welcome_text'];