We want to have a single Vue store which tracks the entire "lifetime" of projects opened by user, which also includes all project-specific stores (project, graph, projectNames, widgetRegistry etc.) being created when project reached "opened" state.

With that single project list, we should be able to display hybrid project tab immediately (without waiting for download). If possible, also show the proper name immediately.

As a result, we should also remove Editor.tsx react layer between AppContainer and ProjectView.