Dataset class breaking ability to change resources on Datasets

The hook_node_update call in dkan_dataset.triggers.inc to the Dataset class breaks the ability to change resources.

On a clean install editing one of the default datasets and changing the resource or adding a new one doesn't result in a change in the resource.

I think part of the issue is that when a resource on a dataset changes that actually fires a node save on the linked resource, which is also loaded in the Dataset class when loading a dataset.

I think removing the full loading of resources from the preload() function would be good for scalability but doesn't completely solve this issue.