actually fix specs/cucumber

app/models/signed_retraction.rb

@@ -18,8 +18,13 @@ class SignedRetraction
                 :target_author_signature,
                 :sender
 
+  #NOTE(fix this hack -- go through the app and make sure we only call RelayableRetraction in a unified way)
   def author
-    sender.person
+    if sender.is_a?(User)
+      sender.person
+    else
+      sender
+    end
   end
 
   def signable_accessors