upgrade/0.9.11/07_emails.sql

   1 alter table emails add column panne_level tinyint(1) not null default 0 after panne;
   2 alter table emails change flags flags enum('active', 'filter', 'panne') not null default 'active';
   3 UPDATE emails SET last = panne WHERE last = 0 AND panne != 0;
   4 UPDATE emails
   5    SET panne_level = 1
   6  WHERE flags = 'active'
   7        AND DATE_ADD(panne, INTERVAL 2 MONTH) > CURDATE();
   8