org-read-date-minibuffer-local-map should use C-n/p/f/b

[Alex Branham]

Hello -

I find it unintuitive that the usual calendar keys C-n/p/f/b don't work
when scheduling tasks in org mode (yes, I know about S-right, etc). I've
something like this to my init file for those four keys (based on their
setup in org-keys.el) for some time with no negative repercussions (that
I know about anyway), perhaps the same should be done for org itself?

#+begin_src emacs-lisp
(define-key org-read-date-minibuffer-local-map (kbd "C-n") (lambda () 
(interactive) (org-eval-in-calendar '(calendar-forward-week 1))))
#+end_src

Thanks,
Alex