GtkPopover should resolve GActions via relative-to or parent toplevel
@chergert
Submitted by Christian Hergert Link to original bug (#768023)
Description
Currently, it feels like a kludge to have to copy GActionGroup's onto a GtkPopover with gtk_widget_insert_action_group() just so they can activate the same actions that the relative GtkMenuButton can activate.
It would be nice if this was just handled for us. My expectation is that it would resolve actions up from the "relative-to" widget, and if that is not set the toplevel window the popover is attached to.