redirect_uri uses $window.location.origin instead of $window.location.href
updated baseUrl to authorizationUrl
added authorization urls
instead of verifying token on server-side, receive code from client and retrieve access token from facebook directly
added dummy ssl certificate
instead of verifying access_token on the server-side use GET request to obtain access_token from the server through authorization code
navbar style update
use angular.bind to bind this to $interval
refactored postMessage handler into a separate prototype function on Popup class
Popup code refactoring