Use the Youtube API to fetch jam tracks

[whitep4nth3r]

Currently the jam tracks are all hard coded in JSON.

If you use the Fretonator on a regular basis, you may get bored of jamming to the same jam tracks over and over again. Could we use the Youtube API to search for a jam track and identify if it is appropriate somehow?

Notice how the video-loader has separate functionality for server-side and client-side rendering - this will have to be taken into account.