Fixed missing subscription data in member update endpoint
Fixed missing subscription data in member update endpoint

closes https://github.com/TryGhost/members.js/issues/94

- The member-api package was recently updated to work directly with models and needs explicit `withRelated` options to attack relations
- Without options, the endpoint was returning the default member data without subscriptions attached, which in Portal showed paid member as free
- Fix updates the middleware for updating member data to correctly pass the relations needed to populate the member

TryGhost/Ghost,bitjson/Ghost,ErisDS/Ghost,e10/Ghost,TryGhost/Ghost,e10/Ghost,TryGhost/Ghost,ErisDS/Ghost,janvt/Ghost,janvt/Ghost,bitjson/Ghost,ErisDS/Ghost