We want to JSON.parse() the stringified avatar from the database before including in LoggedInUserInfo and returning.
Noticed that on user login avatar was a string instead of an object of type ClientAvatar.
The mysql2 node package conveniently "auto parsed" stringified JSON when providing the result set with MySQL, but unfortunately doesn't for MariaDB (https://github.com/sidorares/node-mysql2/issues/1287)... so we need to JSON.parse(...) ourself.
