New version based on new website

Here is the new version of the NBC channel I wrote. It uses json to produce the urls. If a shows does not have a video page or carousel, it just returns and empty list pop-up.

Set it up to pick up all videos not just Full Episodes, since the code is cleaner and shorter if we just pick up all carousels versus trying to hard code the channel to only getting full episodes. 

Late Night with Jimmy Fallon still uses the old format, so we kept the old Show and Episode functions and send that show there.

The Olympics are not currently listed, but it has its own url and has a completely different setup than shows.