Disqus transition successful

I had to fiddle with it a bit, but Disqus works fine.  I've switched my name to trivialknot.  I prefer that commenters refer to me by that name, just for consistency's sake.

There's no particular rationale behind the name "trivialknot".  I just tend to think of mathematical concepts when I'm searching for names.  A trivial knot is a loop that can be smoothly transformed into a circle without ever crossing itself.  In other words, it is a loop without a knot.  This name has been kicking around for a few years.