I'm almost halfway through the Russian tree and I've noticed that some of the URLs don't match the lesson titles. A couple examples from lessons I've done recently: Perfective Verbs 1 shows up as People in the URL, and Past & Infinitive has a URL for Verbs Present 2. Looks like those are the only two up to that point--I would check the rest, but I can't look at URLS for lessons I haven't gotten to yet.
I'm guessing this is probably just from switching some lessons around, and it's entirely possible that it's something that's already been brought up, but I thought I'd mention it.
Thanks to the Russian team for a great course, and congrats on getting out of Beta so quickly!
Maybe it's because April 1st? A joke from the developers. Here is the right links: The List of RU Learning Skills with Their Word List.
These have been there since I started the course though, and it's only those two. From your list (which also has those URLs for those two lessons) it looks like the only other incorrectly-named one is the URL for Education, which instead says Places.