Patch project_notifications-3.

Redmine issue: http://www.redmine.org/issues/7349

Patch URL: http://www.redmine.org/attachments/download/5337/project_notifications-3.diff
Ignore incoming emails from all emission addresses
Fix: attahcments are not sent on issue add.
Modifiche su redmine_stealth.
Fix: ticket via mail doeas not send attachemnts.