Allow adding *-to-1 entities to Smart Folders

[Chr1sG]

Related:

Use Many-to-One Relationships in List View

See comment in the Many-to-Many feature request. Use Case: Single Employee Filling Multiple Roles in Org Hierarchy The list hierarchy is an ideal candidate to show an organization tree. The idea was to show the roles (Seats), then assign people to one or more Seats. A “Seat” can have one or more child seats below it that the list view can display. I then had an “Employee” model that can be associated with one or more seats. So, I expected to be able to show the same employee showing up multip…