Omitting trailing slashes redirects to broken pages without CSS

[not-my-profile]

https://thanks.rust-lang.org/rust/all-time/ -> works
https://thanks.rust-lang.org/rust/all-time -> redirects to https://rust-lang.github.io/thanks/rust/all-time/ which has broken CSS

https://thanks.rust-lang.org/rust/1.59.0/ -> works
https://thanks.rust-lang.org/rust/1.59.0 -> redirects to https://rust-lang.github.io/thanks/rust/1.59.0/ which has broken CSS

etc.

[JohnTitor]

There are two issues:

• redirecting is broken: When we access to /fooDir on GitHub Pages, it tries to redirect to /fooDir/. However, our custom domain isn't configured on GitHub Pages but cloudfront, it will redirect to rust-lang.github.io/thanks/fooDir/.
• style is broken: because we use an absolute path and on GitHub Pages domain it will result in 404.

One easy fix is to manage everything on GitHub Pages, I think.

[Mark-Simulacrum]

We need cloudfront (or needed) because we want to set some custom headers in responses (e.g., to prevent script injection); I don't know the extent to which that's still necessary, but it was the original rationale.

In terms of the redirects breaking, that makes sense. I think one possibly easy fix is to tell GitHub pages they're on a custom domain (thanks.internal.rust-lang.org) and then maybe that'll fix things in terms of not being relative? Not sure. Maybe something we could intercept at cloudfront layer too.