Included changes from stable that could not be merged

Marius Cramer

2014-01-28 746e52a6f3cfdd6438f9c62b39c119925a9405f9

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-- database patch for separate login for mailbox users
ALTER TABLE `mail_user` ADD `login` VARCHAR( 255 ) NOT NULL ;
UPDATE `mail_user` SET `login` = `email` WHERE 1 ;