Added Cmd+C/V/X to TypingModule. Avoid repeating overlapping shortcuts in a smarter way in DebugOverlayWidget.

Changed "Copy Path" shortcut from Cmd+C to Cmd+I.
Added Cmd+I "Copy Path" shortcut to TextFileWidget.
Noop.

Formatting.
Added ConnectionWidget for working folder to ShellWidget.

FolderListingWidget now displays empty folders.
Refactored ConnectionWidget to remove duplicated m_Target and instead
rely on MutuallyConnectable::GetConnected().
Added FolderListingPureWidget; FolderListingWidget now uses
FolderListingPureWidget for single folder listing.