Currently it can be confusing for users when an application is not available because it's building.
We should think about our options, how we could improve visibility of the application status in both OS Explorer and Servers view (for OS server adapters).

For example we could add a status line for an "application" node (or even for a project?) and show "Building..." or something if any of its services is building. We also could use a red font for such statuses. An gif icon would be ideal but I'm not sure it's technically possible.

OS Server adapter is a separate story but we need to add status for it too. Maybe it's worth a separate issue.