Comment (temporarily?) code of org-effectiveness

It seems that having it enabled does make another call to the code blocks in an
(with-eval-after-load "org" ...) construction.
Don't put language indicator in read-only buffers
Switch to using Hi Lock for key binding C-*
Reduce color palette size for highlight-parentheses
Fix syntax of comments at end of line (; vs ;;)
(Un)comment some code
Remove comment
Fix syntax of comments at end of line (; vs ;;)
Update (in a minor way) arguments of `with-eval-after-load'