[O] [bug] Leading spaces aren't preserved in a `verse' special block

[Sebastien Vauban]

Hello,

As you can see on http://screencast.com/t/A7yegfql7awg, leading spaces
aren't preserved in the HTML export of a verse environment.

ECM:

--8<---------------cut here---------------start------------->8---
* Verse

#+begin_verse
>> Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod.
>
> Tempor incididunt ut labore?
> Et dolore magna aliqua?

In a verse,
   indentation should be
preserved.
#+end_verse
--8<---------------cut here---------------end--------------->8---

Best regards,
  Seb

-- 
Sebastien Vauban