Backup-data: multiple schedule and backends

[giacomo (Giacomo Sanchietti)]

@dnutan

last backup end time on dashboard is off by 2 hours

This should depends on the different time zones for PHP an the system.

@dnutan

if custom inclusion is set: global backup inclusion not respected. Only files on custom inclusion are backed up.

This is the expected behavior (GitHub - NethServer/nethserver-backup-data) maybe we should improve the doc.

Thank you Marc, as always your testing is really appreciated and extremely useful!