Fix for: "Versioning cleanup: Item pages while new version in workflow."

Fix for the following:
"While a new version of an item is in the curator workflow:
- On the data package page, the "new version submitted" warning message only appears for curators. It should appear for everyone.
- Non-curator users get a "restricted" message when they try to visit item pages for data files in the original package, because the links from the data package pages refer to the (not-yet-archived) new version. "