URLs without explicit .html are not redirected anymore

Originally created by @sajolida on #16124 (Redmine)

To reproduce:

• Visit https://tails.boum.org/.
• Click on the “Donate” button in the sidebar.
• You arrive on https://tails.boum.org/donate?r=sidebar with no included images or JavaScript because they point 1 parent level too high (eg. https://tails.boum.org/donate.js instead of https://tails.boum.org/donate/donate.js).

This is a regression, probably coming from self-hosting our website, and it’s affecting the donation campaign (and probably other things), so marking as “High”.

Attachments

• funky-download.png

Related issues

• Related to #14588 (closed)
• Related to #16220 (closed)
• Has duplicate #16127 (closed)