See mysociety/societyworks#3267.

When adding the comment data to the notes field include
the user details with the comment in the format requested

mysociety/societyworks#4232

Ingore any updates from Echo that aren't New/Completed
and don't have a resolution code.

Without doing this, if the Echo report is closed again with the same
resolution code (which maps to external status code), the response
template is not located because that only looks for external status code
templates if the external status code has changed.

Using the same handover_notes as Echo to Bromley means that they will be
automatically added to the detail when sent, and included in the Notes,
as well as the report details.

Both the parent and client event updates are coming through to us
on the same report, as they have the same client reference, and
the parent event GUID is the one stored on the report, but we
need to look up the child event when we receive an update on
the child.