Allow the user to drag & drop a Doc, Whiteboard, or other non-hierarchical object (ie, not a List, Folder, or Space) from the sidebar to the toolbar of the active List, Folder, or Space to move it there.

Currently, for the user to move a non-hierarchical object from the sidebar to a "View", the user must click:

> (Row/Object) Settings

> Move To

> List, Folder, or Space (as view)

> (Select a List, Folder, or Space)

This is especially tedious after importing a large number of documents, such as from a Confluence workspace.