Fix bugs in Workbench reader token support
(Total: 2.00 h)
See #1904 for more background. Workbench in master currently supports reader tokens. Right now, when you try to view a Collection with a reader token in a real browser, you get prompted to login. This story encompasses whatever bug fixes are necessary to make it so that you can take a reader token URL and paste it into a stateless browser and see the Collection.