Add Functionality To Live Offline Lists - After #2

After Issue #2 has been completed, we need to enable the functionality of the Live and Offline lists in our popup.html.
- The lists should display each Youtuber in the users 'subscribed' list and Twitch streamer in the users 'followed' list.
- Some HTML and CSS is already outlined the framework. It shouldn't be pretty yet.
- If Streamer is live, the streamer should be moved from the Offline list to Live and link to the stream, viewer count, uptime.
- Else, the Streamer should sit under the Offline list.
- Update the Live/Offline lists every 30 seconds (dependent on API usage limits and how many Streamers followed)