Display an alert and custom page when i21 is being updated

Issue No: DO-157
Created 4/17/2018 5:41:47 AM
Type Feature
Priority Minor
Status Closed
Resolution Fixed
Fixed Version 18.3
Description When i21 is being updated it should send an alert and force the users out after a period of time. Then display a custom page that i21 is being updated instead of the generic "Service Unavailable".   !pastedImage_d95508_0.png! CHANGES: !pastedImage_d95508_1.png!