Added google login new params with fix to facebook login

[DinithHerath]

• Updated google login from

first_name=user_data.get('first_name'),
last_name=user_data.get('last_name'),

to

first_name=user_data.get('given_name'),
last_name=user_data.get('family_name'),

• Also added the Facebook login with the google login.
• Updated the Facebook graph API version to 13.0 as well.

[huychau]

@DinithHerath Many thanks for your update. I think we don't need to check the provider, the implementation like this:

 user = User.objects.create(
    username=user_data['email'],
    email=user_data['email'],
    first_name=user_data.get('first_name') or user_data.get('given_name'),
    last_name=user_data.get('last_name') or user_data.get('family_name'),
 )

Feel free to check and update, I will merge after that. Sorry for late response.