py4web google oauth issue

[Eric]

When trying to use oauth2 with google I received this error

Legacy People API has not been used in project XXXXXXXXX before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/legacypeople.googleapis.com/overview?project=XXXXXXXXX then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.

That link to goggle just showed an error, and after some searching it seems the people api is not available for new oauth2 setups. 

Here are the changes I made for my setup that switches out the people api.

https://github.com/web2py/py4web/pull/120

In addition, there is change for SSO._handle_callback to show errors such as what I received above and a way to force https for callback uris.

Eric