Change file mode of backups that are made available for download to 0600.

Till Brehm

2016-06-27 65ee3af0845f20cd3ae4a3d0c2ee3ce865f7fc7c

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ALTER TABLE `client` ADD `customer_no` VARCHAR( 64 ) NULL AFTER `contact_name` , ADD `vat_id` VARCHAR( 64 ) NULL AFTER `customer_no`;