(Emacs)~org-mode variables: todo-keywords, babel-load-languages

-wait keyword from org-todo-keywords because it's useless

+shell language capability to babel.

Emacs/.config/emacs/config.org

@@ -2158,12 +2158,13 @@ Emacs was very helpful here.
   (org-startup-indented t)
   (org-tags-column 0)
   (org-todo-keywords
-   '((sequence "TODO" "WAIT" "DONE")
+   '((sequence "TODO" "DONE")
      (sequence "PROJ" "WAIT" "COMPLETE")))
   (org-use-sub-superscripts '{})
   (org-babel-load-languages '((emacs-lisp . t)
                               (C . t)
-                              (python . t)))
+                              (python . t)
+                              (shell . t)))
   (org-latex-listings 'minted)
   (org-latex-minted-langs '((emacs-lisp "common-lisp")
                             (ledger "text")