Special blocks: Make well-formed HTML
* org-special-blocks.el
(org-special-blocks-convert-html-special-cookies): Close paragraph
before opening or closing the <div>, and open paragraph after. Also
changed newline placement to be the same as for other blocks.
The problem was that special blocks did not produce well-formed HTML
because they wrapped the opening and closing
<div> tags in <p> tags.
TINYCHANGE
This patch only borrows a few lines from the handling of `CENTER'
blocks in org-export-as-html.