works: https://forge-allura.apache.org/p/allura/tickets/stats/
does not work: https://forge-allura.apache.org/rest/p/allura/tickets/stats/
The rest version of a tracker's stats page expects /rest/p/allura/tickets/
{ticket_num}.
The endpoint /rest/p/allura/tickets/
stats causes the rest handler to use stats
as the ticket_num
-- resulting in a 500 error.