[*] Security improvements (PPPM-1562)

The following issues were resolved:

[-] (Linux) Backup files rotation did not work for subscription backups. (PPPM-1556)
[-] API did not return the correct information about traffic usage by customers. (PPPM-308)
[-] (Windows) The “Support” link in Tools & Settings did not work properly. (PPPM-1558)
[-] (Windows) Administrators could not migrate IDN domains. (PPPM-83). To resolve this, Migration Manager and Migration Agent should be updated on the source server.