Added lists and made their first entries bold to demonstrate traversing the DOM with jQuery

Added event listeners to all li elements to turn the entire list invisible to demosntrate DOM traversal with jQUery
Changed jquery_faq.html to use the native jQuery hide, show, and toggle functions instead of using a class called invisible to manipulate the visibility of DOM elements
Changed jquery_faq.html to use fadetoggle instead of toggle a class to hide and reveal elements.

Added file whack.html and gave it a clickable image as a starter template for a whack-a-mole game. Clicking the image makes it fade away.
Replaced all fade toggles with slide toggles in jquery_faq.html and whack.html