Remove the dependency on jquery

I did a spike on seeing if we could remove jquery as a dependency: https://github.com/bitovi/funcunit/tree/no-jq


It didn't quite succeed. Some of the issues I ran into:

* There are uses of .val() and .text(), etc. that we'd have to write our
own versions of.
* There are jqueryisms in the test and some dependencies on jquery-only
selectors.