Add static screen for 50x errors
Add static screen for 50x errors

Change-Id: Iab448dd4110bce755a7db9d5b3792387b3eb3ecd

openstack/stackalytics,0xf2/stackalytics,0xf2/stackalytics,stackforge/stackalytics,openstack/stackalytics,Mirantis/stackalytics,stackforge/stackalytics,mhharsh/stackalytics,openstack/stackalytics,openstack/stackalytics,mhharsh/stackalytics,Mirantis/stackalytics,0xf2/stackalytics,Mirantis/stackalytics,mhharsh/stackalytics,0xf2/stackalytics,stackforge/stackalytics