Broken folder links in directory listing

[DeltaF1]

Links to sub-folders in the directory listing do not include a trailing slash, and redirect to a broken link as per #13.

Steps to reproduce

• Navigate to a hyper/dat url with a sub-folder (example dat://daa1a5dcffa522c78d1fe5949c247fe985e4319e2a5bf0db456b0d29adab0482)
• Click on a link to a subfolder (in the example click test)

Expected behaviour

• Clicking subsequent links in the directory listing will lead to files and folders within that directory

Actual Behaviour

• The URL in the navbar is missing a trailing slash and so Broken relative file links in directory listing #13 comes into effect.