Thanks for working on this! Overall it looks good, and testing the core functionality appears to work.
A couple of comments:
1. In "templates/index.html" on line 128, there is still a reference to "training sessions" - given some events (e.g. conferences) have training sessions attached to them, I odn't think it's imperative we remove those words, but wanted to note it in order to solicit feedback.
I did notice that one as well, an considered it something we should leave.
2. In "templates/pages/download/recognition.html" There is a reference to this wiki page:
First, we probably have to update the wiki as we have removed the training section (either remove the content or move it to a "Deprecated" section?) which would possibly cause use to update the title for readability purposes. Updating the URL would not break the URL, but it would break the anchor jump.
We should definitely update the page, yes. I don't think we need to create a deprecated session -- there is version history on the page after all.
TBH, I don't much care about anchor jumps inside the page breaking. As long as the main URL doesn't change (which it won't, as you say), it's fine.