Adding GET: users/current/appsessions and GET: appsessions/{id}/appresults

GET: users/current/appsessions (?appid=x) -- list appsessions that token can access
GET: appsessions/{id}/appresults -- list appresults created by the appsession. This is same as looking at the Output.AppResults property on GET: appsessions/{id}

This was contributed by @brunzefb in #15