Linking to specific algorithm & problem

[JohannesBuchner]

It used to be possible to link to
https://chi-feng.github.io/mcmc-demo/app.html#RadFriends-NS,donut
to pull up that specific algorithm and problem.

This was very useful.

At some point this stopped working and now it always shows the default (first algorithm, first problem).

Is it possible to restore this functionality?