Commented Issue: Routing conventions should not handle requests if action does not exist [687]

Right now, several actions return an action name even if the action doesn't exist. We should avoid handling the request if the action doesn't exist so other routing conventions can try to handle it.
Comments: I've put together the start of a fix for this... codereview is out. Assigning to Youssef who will integrate with another bug fix he is working on.