Searching users using the display name attribute

It is now possible to look up Futurae users using the user display name attribute. It is of course still possible to look up users by their Futurae user_id, username, allowed factors, or status attributes, as before.

This change is non-breaking, and is now live across installations.

The new feature can be accessed both with the Admin API (v1.4.1) as well as when searching users in Command & Control (formerly Futurae Admin).