Allow author names to be anonymized on "Anonymous link" for projects

[tompollard]

We allow projects to be shared using an "anonymous link".

We have had a couple of requests for author names to be concealed on the project page that is accessible via these links. This would allow the links to be used where double blind peer review is used.

Double blind peer review (i.e. both authors concealed from reviewers, and reviewers concealed from authors) seems relatively common for ML conferences.