pending_emails

One page of the claim emails waiting to be sent (Claims > Processing).

Code
Body: ``{search, page, page_size, sort_by, sort_order}``, all optional;
``sort_by`` is date (the print date) or file (claim number, then title),
and without it the oldest file comes first. Response: ``{page, page_size,
total_count, total_pages, emails}``.