The general __init__ file is a more natural home, and where other endpoints
(e.g. create_realm, etc) live.
Also changes forms.ValidationError to django.core.exceptions.ValidationError
to match the rest of the file/codebase.
In Django 1.10, the get_token function returns a salted version of
csrf token which changes whenever get_token is called. This gives
us wrong result when we compare the state after returning from
Google authentication servers. The solution is to unsalt the token
and use that token to find the HMAC so that we get the same value
as long as t he token is same.
Does a database migration to rename Realm.subdomain to
Realm.string_id, and makes Realm.subdomain a property. Eventually,
Realm.string_id will replace Realm.domain as the handle by which we
retrieve Realm objects.
Previously, we used to create one Google OAuth callback url entry
per subdomain. This commit allows us to authenticate subdomain users
against a single Google OAuth callback url entry.
For some reason, we use 'load' function but it doesn't exist in the JWT
library code. This commit updates the code to use the correct interface
of the JWT library.
The signature verification is done by the decode function.