Code cleanup some small changes in the formatting.

src/membership/models.py

@@ -56,8 +56,8 @@ class ActivationManager(models.Manager):
         """Creates a PendingActivation instance with an random activation key.
         @param user: the user that requests activation.
         """
-        salt = str(user.pk * random.random()) + \
-               user.registration_date.isoformat()
+        salt = str(user.pk * random.random())
+        salt += user.registration_date.isoformat()
         activation_key = hashlib.sha1(salt.encode()).hexdigest()
         return self.create(user=user, activation_key=activation_key)