(Not the GP) I had the same stuck on spinner issue until I white listed the site in Disconnect (FF 36 on OSX).

Now it's white listed the page loads fully, with one warning in the web console, concerning https://www.facebook.com/v2.2/plugins/login_button.php?...:

This site makes use of a SHA-1 Certificate; it's recommended you use certificates with signature algorithms that use hash functions stronger than SHA-1.