XSLT Docbook bugs:

- Elements like command, filename, etc must be rendered passing the "class=" HTML argument
- <areaspec> is not working anymore
- There is too much <div> in titlepage
- <emphasis> must be rendered to HTML's <em>, and the "role=" must be manipulated.
- <tip>, <warning> etc are rendered with an inutile title, when using admon graphics
- request for .css area in source code
