Created table and model for FacebookAccount.
Modified users table. (dropped facebook_id, instagram_id)
Started testing Facebook Login with js-sdk.

 Changes to be committed:
	new file:   app/controllers/AdminController.php
	new file:   app/database/migrations/2014_08_04_210945_drop_facebook_id_and_instagram_id_from_users.php
	new file:   app/database/migrations/2014_08_04_212700_create_facebook_accounts_table.php
	new file:   app/models/FacebookAccount.php
	modified:   app/models/User.php
	modified:   app/routes.php
	new file:   app/views/admin/user/admin-login.blade.php
	new file:   app/views/fblogin.blade.php