108537814: Implementation of 3 factor authentication.

The post register endpoint will send a random 5 digit code via sms and another via email.
If either code fails to send, the user will not be created and the person can register again.
The codes are saved to the session cookie, and expire in 1 hour.

Another iteration of this story will save the codes to a database.

app/notify_client/api_client.py

@@ -0,0 +1,8 @@
+from __future__ import unicode_literals
+from notify_client import NotifyAPIClient
+
+
+class AdminAPIClient(NotifyAPIClient):
+    def init_app(self, app):
+        self.base_url = app.config['NOTIFY_DATA_API_URL']
+        self.auth_token = app.config['NOTIFY_DATA_API_AUTH_TOKEN']