#14470 Meeting: Show if a sent message is still in the email queue

Show if the message has a ".sending-" prefix and is older than 5 minutes (send error)
EmailTool: method to retrieve mails in the current queue

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs/Naaya@20445 a0171fae-0946-0410-966d-b1775066cd26
Released 3.3.18 new version 3.3.19

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs/Naaya@20446 a0171fae-0946-0410-966d-b1775066cd26