Version Alpha 19

• This release features a major re-flow of how users log in. Instead of logging in and going to the site select screen, they immediately go to their received tracks. This is to lay groundwork for users that are sent tracks, but aren't necessarily users of a particular site. People that are site-affiliated will just select the site once, and that option is saved, so there's not any drawbacks for them, while providing a much cleaner pathway for new users.
• The panel design has undergone some tweaks as well. There is no more header, options has moved to the bottom left, and I removed the user avatar (you know who you are, right?). This makes the design more consistent across pages that can and can't be searched, and allows for more vertical room for lists.