[greenhouse] greenhouse area/app which displays error messages. Errors are related to kubernetes plugin configs loading or mismatches between config and plugin to show.

[ArtieReus]

I would like to switch the demo info div to a warning message so it can be integrated with the global messages provider and together with other messages we want to display @edda within the notifications container I have created.

[ArtieReus]

this would be the worst case:

• Demo warning
• Call to kubernetes failed ==> the error message has to be improved within sapcc-k8sclient @andypf
• Non existing version of the greenhouse-mng plugin => this error is displayed within an own messages provider!!! of the plugin. We need to keep same margins as the global messages provider. If the mng plugin is not active this message will not be displayed

[ArtieReus]

#503