Updates session API to use shared http api response util
Updates session API to use shared http api response util

googledatalab/datalab,yebrahim/datalab,craigcitro/datalab,parthea/datalab,parthea/datalab,yebrahim/datalab,craigcitro/datalab,googledatalab/datalab,craigcitro/datalab,craigcitro/datalab,yebrahim/datalab,yebrahim/datalab,parthea/datalab,googledatalab/datalab,googledatalab/datalab,yebrahim/datalab,googledatalab/datalab,parthea/datalab,googledatalab/datalab,craigcitro/datalab,parthea/datalab,parthea/datalab