(#113) - Fix regression in POST /_session
(#113) - Fix regression in POST /_session

Also fixes the return value of PUT /_config along the way

tyler-johnson/express-pouchdb,nicolasbrugneaux/express-pouchdb,tyler-johnson/express-pouchdb,pouchdb/pouchdb-server,pouchdb/pouchdb-server,nicolasbrugneaux/express-pouchdb,nicolasbrugneaux/express-pouchdb,tyler-johnson/express-pouchdb