Move lang/org => org/*

Since lang/org has grown (and is expected to grow much, much more), it
has been given its own module category.

Concerns #129, #138

modules/org/org-babel/autoload.el

@@ -0,0 +1,12 @@
+;;; org/org-babel/autoload.el -*- lexical-binding: t; -*-
+
+;;;###autoload
+(defun +org-babel/edit (arg)
+  "Edit the source block at point in a popup.
+
+If ARG is non-nil (universal argument), use the current window."
+  (interactive "P")
+  (if arg
+      (call-interactively #'org-edit-special)
+    (with-popup-rules! (("^\\*Org Src" :regexp t :select t :noesc t :same t))
+      (call-interactively #'org-edit-special))))