Fix HTML tables

Transfered from https://github.com/jakartaee/jakarta.ee/issues/365

HTML table would look nicer on a page if we would apply the .table class on them: https://getbootstrap.com/docs/3.4/css/#tables

Hopefully, we can find a way to automatically append this class each time hugo generates an html table.

After discussions with Chris, we've decided that a new JS section will be added to the end of the footer. This footer will be made up by scripts that help niche sections of the site to function.