eeschema and pcbnew paste: consistent paste behaviour

Duplicates are reannotated on paste in the same way in pcbnew and
eeschema such that when copying and pasting the same block in the
pcb and schematic, the reference designators will match.

pcbnew/tools/edit_tool.cpp

@@ -198,6 +198,7 @@ bool EDIT_TOOL::Init()
     // Selection tool handles the context menu for some other tools, such as the Picker.
     // Don't add things like Paste when another tool is active.
     menu.AddItem( ACTIONS::paste,                 noActiveToolCondition, 150 );
+    menu.AddItem( ACTIONS::pasteSpecial,          noActiveToolCondition, 150 );
     menu.AddItem( ACTIONS::duplicate,             SELECTION_CONDITIONS::NotEmpty, 150 );
     menu.AddItem( ACTIONS::doDelete,              SELECTION_CONDITIONS::NotEmpty, 150 );