Calls to the datatraker backend are having to be redirected

[rjsparks]

The 301s below should be avoided by constructing the client for the datatracker API such that it goes after the thing with the trailing slash in the first place.

[08/Aug/2024 10:27:07] "GET /api/rpc/subject/5709/person HTTP/1.0" 301 0
[08/Aug/2024 10:27:07] "GET /api/rpc/subject/5709/person/ HTTP/1.0" 200 44
[08/Aug/2024 10:27:45] "POST /api/rpc/persons/ HTTP/1.0" 200 477
[08/Aug/2024 10:27:45] "GET /api/rpc/doc/submitted_to_rpc HTTP/1.0" 301 0
[08/Aug/2024 10:27:45] "GET /api/rpc/doc/submitted_to_rpc/ HTTP/1.0" 200 517
[08/Aug/2024 10:27:48] "POST /api/rpc/persons/ HTTP/1.0" 200 477
[08/Aug/2024 10:28:42] "POST /api/rpc/persons/ HTTP/1.0" 200 477
[08/Aug/2024 10:28:42] "POST /api/rpc/persons/ HTTP/1.0" 200 477
[08/Aug/2024 10:28:42] "GET /api/rpc/subject/5709/person HTTP/1.0" 301 0
[08/Aug/2024 10:28:42] "GET /api/rpc/subject/5709/person/ HTTP/1.0" 200 44
[08/Aug/2024 11:16:17] "POST /api/rpc/persons/ HTTP/1.0" 200 477
[08/Aug/2024 11:16:41] "GET /api/rpc/doc/submitted_to_rpc HTTP/1.0" 301 0
[08/Aug/2024 11:16:41] "GET /api/rpc/doc/submitted_to_rpc/ HTTP/1.0" 200 517