Emit "itemMiddleClicked" when Ctrl-clicking a view in single selection mode
When Ctrl can't cause a change in selection, so instead emit
This way one can Ctrl-click a Place or folder in Folders panel to open it in
a new tab, similar to what web browsers.
I sometimes find myself instinctively Ctrl-clicking instead of middle-clicking the Places panel which currently does nothing.
- Middle clicked on "Trash" in places panel, opened in a new tab
- Ctrl to add to the selection in main view is unchanged