Refactors +evil*insert-newline-*-and-respect-comments advice. This also
fixes an issue where o uses haskell's line indenter in haskell-mode,
which is naive. Instead, we use haskell-indentation-newline-and-indent,
which is smarter.
This is a dirty dirty hack. May Nyarlathotep have mercy on our souls.
Reported by @ar1a