There are a lot of little fixes to tests here, but the biggest issue was
too much recursion because we kept replacing the helpers over and over
again. I assume Chrome has tail recursion or something to speed this up
but Firefox hated it.
Otherwise, we can't rely on the order of attributes in rendered HTML so
I simplified most of those tests to just look for key strings in the
HTML that are rendered.
Robin Ward
942ee1e218