Add sections and a table of contents to screen.css.

The stylesheet has gotten big enoug that some structure is needed
to keep everything readable and in order.
Add a basic media query.
Edit viewport meta tag.
Switch main functions in getJSON to alleviate long image loading.

I think this only makes a small difference, I haven't really
been able to test it with 2Mbps download speeds. But it works
fine locally.
Adjust body max-width and margin.
Add 'root' div to wrap index contents.
Add quote from Grace Hopper.
Add JS specific IDs to an object, rewrite code to hook into new object.
Edit quote from Boogie to make it more clear.
Rename getRandomQuote parameter.
Add fadeInBackground function and setup html/css so it will work.