Cache users in memory storage in Dashboard
Cache users in memory storage in Dashboard

Closes bug 1308093

Change-Id: Iff2b82399dea40beccdb11878a3d98f884c7c59d

mhharsh/stackalytics,zxiiro/spectrometer,mgkwill/spectrometer,0xf2/stackalytics,zxiiro/spectrometer,dave-tucker/spectrometer,mgkwill/spectrometer,dliu2015/stackalytics_zanata,Solinea/stackalytics,openstack/stackalytics,mgkwill/spectrometer,dave-tucker/spectrometer,zxiiro/spectrometer,Solinea/stackalytics,zxiiro/spectrometer,mgkwill/spectrometer,stackforge/stackalytics,zxiiro/spectrometer,openstack/stackalytics,dliu2015/stackalytics_zanata,openstack/stackalytics,mohitsethi/stackalytics,dave-tucker/spectrometer,mohitsethi/stackalytics,stackforge/stackalytics,danielmellado/stackalytics,AlexanderYAPPO/stackalytics,danielmellado/stackalytics,Mirantis/stackalytics,0xf2/stackalytics,Mirantis/stackalytics,dave-tucker/spectrometer,mgkwill/spectrometer,danielmellado/stackalytics,nihilifer/stackalytics,Mirantis/stackalytics,dave-tucker/spectrometer,mhharsh/stackalytics,Code-Fly/stackalytics,0xf2/stackalytics,stackforge/stackalytics,nihilifer/stackalytics,dliu2015/stackalytics_zanata,nihilifer/stackalytics,0xf2/stackalytics,openstack/stackalytics,AlexanderYAPPO/stackalytics,AlexanderYAPPO/stackalytics,Code-Fly/stackalytics,mhharsh/stackalytics,Code-Fly/stackalytics,mohitsethi/stackalytics,Solinea/stackalytics