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/remove_users_from_stream.py

@@ -51,4 +51,4 @@ class Command(BaseCommand):
             did_remove = do_remove_subscription(user_profile, stream)
             print "%s %s from %s" % (
                 "Removed" if did_remove else "Couldn't remove",
-                user_profile.user.email, stream_name)
+                user_profile.email, stream_name)