Access the UserProfile's new email field rather than using User.

This is preparatory for stopping using the User model.

(imported from commit a1b0808c8cc2ddd19a25163f91c4f18620c9ce90)

zephyr/management/commands/add_users_to_streams.py

@@ -51,4 +51,4 @@ class Command(BaseCommand):
                 did_subscribe = do_add_subscription(user_profile, stream)
                 print "%s %s to %s" % (
                     "Subscribed" if did_subscribe else "Already subscribed",
-                    user_profile.user.email, stream_name)
+                    user_profile.email, stream_name)