Added Facebook utils class to handle normal Facebook Authentication
commons-codec 1.7 and up is required to use Base64 url safe constructor in Facebook utils class
Added fbUserId field to User model

Also added a getter for password field
Added furniture, security and garage fields to Property model. All of them are booleans.
Refactored some code in updateUser action, it still doesn't allow to update partial fields.
Added method to authenticate using Facebook

(it uses signed request to get information about the current user)
Added Facebook login route as /fblogin