Fields and instructions on the workflow form should be clearer

There's a few things that should be changed on the workflow form.

1. If for some reason the content type isn't ready to be conflict-enabled, we should replace the enabling checkbox and such with instructions on what to do. This is especially important when you're adding a new content type, because you haven't had a chance to add any CCK fields yet. Even if you're using event, you need to add a nodereference field anyways.
2. In the event case, it would probably need to use ajax to add and remove fields based on the status of event. I have no idea how to do this, but it would make a lot of sense.
3. The selection field for choosing which resources to check against should be checkboxes, not a multi-select list.

--Andrew