Mail statistics are now stored onto a separated object (mail.mail.statistics), allowing to
handle emails separately from statistics (among other removing mail.mail entries while keeping
statistics).
Everything linnked to opened/replied/bounce is not managed by mass_mailing, removed added code
in mail module.
bzr revid: tde@openerp.com-20130913115408-322cyjipdg680as6
Replaced some read by browse
Moved get_reply_to from mail_mail to mail_message
Hint: specifying email_from, reply_to help to enhance computation time
[REF] mail: cleaned some tests, renamed a file, moved mail_group tests into a dedicated file
bzr revid: tde@openerp.com-20130827133058-ko0g0ib0f0jihmdk
Xavier Morel
Thibault Delavallée
Olivier Dony