Mail handler: set mail_notification to only_my_events when creating a new user (#13341).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11590 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/mail_handler_test.rb

@@ -768,6 +768,7 @@ class MailHandlerTest < ActiveSupport::TestCase
       assert_equal expected[0], user.login
       assert_equal expected[1], user.firstname
       assert_equal expected[2], user.lastname
+      assert_equal 'only_my_events', user.mail_notification
     end
   end