Action button references now updated when you copy and paste books to a new folder

When you copy and paste multiple books from one folder to a different folder, action buttons in the books that reference any other books which are being copied at the same time are automatically updated. The action buttons are adjusted to point to the new location of a copied/pasted book, not to the original location.

If you copy and paste a book to a new folder, but the book contains an action button that references another book in the original folder, the action button continues to reference the book in the original folder.