Updated schema for domains
Updated schema for domains

This adds more columns to customize SPF, DKIM and DMARC entries
per-domain. Also includes a helper property to format DNS zone serial.

nikitos/npui,hermes-jr/npui,unikmhz/npui,hermes-jr/npui,unikmhz/npui,nikitos/npui,unikmhz/npui,hermes-jr/npui,nikitos/npui,hermes-jr/npui,unikmhz/npui,nikitos/npui