Throw 401 for security denial for unauthenticated

Bowe Strickland

2018-10-27 323fa95deea50f49c119728fc2eeacb9e0c51241

 TODO.txt

@@ -111,15 +111,6 @@
         )
 

Future
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- 1.6: Remove IContextURL and TraversalContextURL.

- 1.9: Remove set_request_property.
- 1.9: Remove extra code enabling ``pyramid.security.remember(principal=...)``
  and force use of ``userid``.

Probably Bad Ideas
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