Listing suggestions

Closes issue #30.
Ok, whatever not being used should be removed, keeping only the used/functional code.

That could be a way forward, let's see when we get to it. I still don't have a clear picture about the best way to handle nested resources, out of the several possibilities. I do have the impression the "ember way" would be for these to be handled by their own templates and controllers, as I mentioned before. Need to find more references