The test wizard will be dropped eventually but it is not possible to delete
the mass-mailing before the transient is cleaned too due to the required field.
To make it faster, add a ondelete cascade on the field.
Closes#15217
- mail: now trigger postprocess_sent_message in every case, being sent or not, as the state
is propagated in the method; udpated all addons accordingly;
- email_template: fixed URL to edit it in website + form view;
- mass_mailing: barchart now send jsonified value;
- mass_mailing: tweaking the form view with all options
bzr revid: tde@openerp.com-20140408124053-o9tb14k6v47s5mjd