HW tournament statistics analyzer.

I looked at the changes; the list of reports is now generated dynamically using JavaScript. On the one hand, we can now remove the parser (which will also speed up the process) and simply make a request to the API. On the other hand, it involves changing quite a bit of code. I'll take care of this in the new year.

Added 9 minutes later
Another good piece of news – judging by the comments, the ratings have almost equalized in terms of numbers, so it looks like the rating error wasn't on my end (and the one I have seems to be due to some incorrect rounding) :D