#7792 Fix API handling of MovedTickets with absolute URL
The ticket API returns an incorrect redirect for MovedTicket records that have a full URL. Example:
curl -I 'http://sourceforge.net/rest/p/allura/tickets/6568' HTTP/1.1 301 Moved Permanently ... Location: http://sourceforge.net/resthttps://forge-allura.apache.org/p/allura/tickets/6568