Daily data push from back end

[hebron-george]

Problem

When a user uses the front end and leaves the app open in the browser, it won't update the playlist of available songs/videos without a full refresh.

We need a way to subscribe to the back end so that it knows to send us updates when there are any. If we receive any updates, it should not be disruptive to the user's experience (i.e. no page reload or skipping currently playing songs).

Related back-end issue: happy-software/happy_youtube_watcher#34