Support the lowest common denominator for default_edit_template, as per #23
`reporter` is not usually editable by unprivileged users. Even if it is left as-is,
the PUT request is trying to update it, resulting in the following error:
{"errorMessages":[],"errors":{"reporter":"Field 'reporter' cannot be set. It is not on the appropriate screen, or unknown."}}
Commenting out the field leaves the information visible, so is a reasonable compromise.
Mike Pountney