Student applications blind review mode

[wunc]

Add some sort of "blind review mode" for faculty or their delegates, which hides certain student research application attributes like the applicant's name, email address, and etc. to avoid unconscious bias when reviewing the applications. Maybe a user or session setting, so that it's remembered across pages while the reviewer is logged in?

As a part of this, we'll probably have to change the individual student application slugs to a random string, including retroactively. (which is actually a good idea to do anyway as a good security/privacy practice)