Fixed #3835 Delete MailBackup not working - Log shows a warning about SQL I...

Till Brehm

2016-04-20 86853d4d0fd66c277746e9e0cf07fbecbfbbc362

1
ALTER TABLE `mail_user` ADD `disablesieve-filter` ENUM( 'y', 'n' ) NOT NULL DEFAULT 'n' AFTER `disablesieve`;