[NB] Label Multi Documents Simultaneously

When I select multiple documents and then set the label, I expect all those documents selected to have the same label. Instead, only the first document changes.

The inspector only ever shows information for the single item focussed in the editor, but you can set the status or label for multiple documents via the context menu when the items are selected in the binder, corkboard, or outliner. This works the same as in 1.x.