Base export email addon

Add server action type to send by email a data export For this new action type you need to fill the following fields : - Filter : it defines the filter to use on the data. - Template : it is the mail template to send the email. - Saved export : it is a saved export list. - Fields to export : it is the list of field to export. It can be used alone

or to complete the saved export list.

Example of use : in a cron for a periodic export of some data

to see the evolution.