Emergency Contact for junior bookings

[nickevansuk]

GLL have raised that support for an Emergency Contact is essential for junior bookings. This is likely to be the case for other operators too.

This can be easily supported as follows:

"customer": {
    "@type": "Person",
    ...
    "emergencyContact": {
      "@type": "Person",
      "name": "Ralph Capes",
      "telephone": "020 811 8055"
    }
}

[nickevansuk]

Added to tooling to ease implementation: openactive/data-models@d0bfb38