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Task #18368

Updated by Peter Amstutz almost 2 years ago

Ability to tell the user about system maintenance.    Want a banner on workbench2. 

 A very simple implementation could be a public config item exported by Controller where an admin can populate a message to be shown to user, e.g. "we are aware of performance issues and are investigating a fix" or "scheduled maintenance on Saturday November 29th 21:00-23:00, Arvados will be unavailable". 

 Display of the banner could be one of (TBD): of: 

 * Box at the top of the screen, which pushes the content down until it is dismissed 
 * Dialog overlay that pops up when the app is loaded, overlay, which must be dismissed 

 Could also add a menu item to the "notification" menu which brings the message back after being dismissed. 

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