Two new speed commands.

* org.el (org-speed-commands-default): Two new speed commands.
Use `:' for `org-columns' and ̀#' for `org-toggle-comment'.

lisp/org.el

@@ -17839,6 +17839,7 @@ BEG and END default to the buffer boundaries."
     ("c" . org-cycle)
     ("C" . org-shifttab)
     (" " . org-display-outline-path)
+    (":" . org-columns)
     ("Outline Structure Editing")
     ("U" . org-shiftmetaup)
     ("D" . org-shiftmetadown)
@@ -17852,6 +17853,7 @@ BEG and END default to the buffer boundaries."
     ("w" . org-refile)
     ("a" . org-archive-subtree-default-with-confirmation)
     ("." . org-mark-subtree)
+    ("#" . org-toggle-comment)
     ("Clock Commands")
     ("I" . org-clock-in)
     ("O" . org-clock-out)