Update from roles to role

[chartgerink]

This PR updates the roles element of the user data to role. It appears that BlitzJS only validates against the role and therefore was having issues allowing people with the right permissions to access restricted pages (e.g., /admin but also the membership area).

Fixes #1958.

[nsunami]

Looks good to me 👍
I tested setting myself as a SUPERADMIN, and I was able to access the admin dashboard.

I had one additional comment about the prettier config for disabling trailing space.