Handle bad directory conditions better

[miketheman]

Example: https://inspector.pypi.io/project/medifile/2.1/packages/d6/b0/aabfa3c54d33657403f225f05e00f6686f428b77e7103be508c3da6c0a2a/medifile-2.1.tar.gz/

The files have a leading /./ which makes them unbrowseable - and inspector returns a 404.

These kinds of "broken" distributions can't be uploaded to PyPI any longer, but older ones before these checks were in place exist on the index.

I can imagine a couple of options here, if inspector encounters this pattern:

• show a message and don't link to the files
• figure out a way to actually link to the files anyways

Maybe some other solution?

[kam193]

I think a warning message on the listing page that the distribution is incorrect and cannot be viewed in the inspector would be enough, assuming there are not so many of them. A way to link them could be considered if we came to issues with them more often