Update `trunk/Scripts/CentOS-Web':
- Introduce first idea of `centos-web.cgi'.
- Used a modified version of stylesheets from
`trunk/Identity/Webenv/Css'.
- Introduce first ideas related `Xhtml' module. The Xhtml module
encapsulates XHTML definitions, based on files inside
`trunk/Identity/Webenv/App/Home' directory and provides the
definition layer needed to automate construction of XHMTL
documents dynamically through Python programming.