[WIP] New user can now accept invite and will be made to

register. On succesful register and verfication they
will be added to service and forwarded to dashboard.

Nothing is done yet with the permissions requested in the
invite to the user.

app/notify_client/models.py

@@ -125,3 +125,12 @@ class InvitedUser(object):
 
     def has_permissions(self, permission):
         return permission in self.permissions
+
+    def serialize(self):
+        return {'id': self.id,
+                'service': self.service,
+                'from_user': self.from_user,
+                'email_address': self.email_address,
+                'permissions': self.permissions,
+                'status': self.status
+                }

app/notify_client/user_api_client.py

@@ -34,8 +34,14 @@ class UserApiClient(BaseAPIClient):
         return User(user_data['data'], max_failed_login_count=self.max_failed_login_count)
 
     def get_user_by_email(self, email_address):
-        params = {'email': email_address}
-        user_data = self.get('/user/email', params=params)
+        try:
+            params = {'email': email_address}
+            user_data = self.get('/user/email', params=params)
+        except HTTPError as e:
+            if e.status_code == 404:
+                return None
+            else:
+                raise e
         return User(user_data['data'], max_failed_login_count=self.max_failed_login_count)
 
     def get_users(self):