Custom rule based data quality resolutions not included in export

[jmcarson]

We are working on incorporating this module to find outstanding data queries.

If you open a query on a custom rule the query is not included in the export. My suspicion is that the following line in export.php is causing them to be excluded:

-- join to metadata to exclude fields that no longer exist (like REDCap does programmatically)
JOIN redcap_metadata m
	ON m.project_id = $project_id
	AND s.field_name = m.field_name

custom rules do not have a field_name associated with them so will be filtered out. Possibly updating to something like this:

-- join to metadata to exclude fields that no longer exist (like REDCap does programmatically)
JOIN redcap_metadata m
	ON m.project_id = $project_id
	AND (s.field_name is null or s.field_name = m.field_name)