Detailed aurora

Detailed release

• Aurora now provides images for the books
• Aurora now shows only the urls which has downloads for books
• Bug fixes and optimizations

Roadmap:

• Make downloads without the need to visit the url
• Detect if libgen can't be reached and add information screen about that
• Make sure you'll be able to change the libgen url
• Detect if you're not on a VPN when downloading and/or in general