Trying to implement Undo and Redo for CopyController.
Finish working on Copy command undo.
Finish working on Copy and Delete command undo and redo.
Implements Ctrl+Z and Ctrl+U for undo and redo.
Implements in place renaming file or directory.
Refactoring some code.
Fix some bugs.
End of implementing undo redo and rewriting controllers
Adds Cut implementation.