tools/magit: clean up after magit more intelligently #506

Ensures magit buffers are cleaned up after magit-status is closed. Will
defer cleanup on process buffers, until the processes have finished.

Also fixes issue where quitting magit will leave leftover windows.

modules/lang/org/autoload/org.el

@@ -345,3 +345,6 @@ with `org-cycle')."
             ((org-in-src-block-p)
              (org-babel-remove-result)
              t)))))
+
+;;;###autoload
+(defalias #'+org/toggle-fold #'+org|toggle-only-current-fold)