api endpoint for user info including quota

db: can we coordinate to finish quota? i'd need a way to fetch per user quota info.
azul: so like an api endpoint that tells you data about a specific user - for now quota info and maybe service level?
      sth. like /users/:user_id -> json({id: user_id, quota: ..., service_level: ...})

(from redmine: created on 2014-04-03, closed on 2014-04-30)