I have added a snippet from Plausible for webanalytics in index.html, hopefully that is the right place to put it.
I have got it to track the rconf.gitlab.io/userinfoboard subfolder. Any reason why the dashboard is at rconf.gitlab.io/userinfoboard/dashboard rather than just rconf.gitlab.io/userinfoboard? The shorter URL would be easier to remember.
Either way, the analytics should work - I think it is just me that can look at the dashboard, but I have an API key that we could use (maybe with https://github.com/giocomai/plausibler). For now, just let me know when you merge this in, so that I can check it's working.