Fix Sam

We changed Sam's job title, and it was showing up fine [here](http://quirkafleeg.info/team), but not [here](http://quirkafleeg.info/team/sam-pikesley). I think this is because the imported data is staying as published, even thoughthere's a newer published version, so I've changed the `attach_publisher_edition` method to get the last published version, rather than the first.