fix(user.json): set proper related model ACL
fix(user.json): set proper related model ACL

doktordirk/aurelia-auth-loopback-sample,doktordirk/aurelia-auth-loopback-sample,doktordirk/aurelia-authentication-loopback-sample,doktordirk/aurelia-authentication-loopback-sample,doktordirk/aurelia-authentication-loopback-sample