Update render module of centos-art.sh script.
    
    - Previously, the render module tuned final files up inside
      asciidoc_setXhtmlRendition function using the RENDER_TARGET parent
      directory. This made file tunning to be repeated over the same files
      when more than one final file is produced. This update moves final
      file tuning from asciidoc_setXhtmlRendition to the end of files
      module inside the render module. This way, file tuning is applied to
      all files once they all have been produced.
    
    - Previously, the render_setLocalizedXml function was creating
      untranslated instances without considering whether the source file
      has related translations or not. This made the render module never
      to produce localized versions of the source file and as consequence
      no localized version of final files. This update changes
      render_setLocalizedXml function to verify whether source files have
      related translation files and produce instances of them accordingly.
    
    - Previously, the article module was using manpage as function name in
      its top comment.  This update changes the top-comment of article
      module to use article as function name instead of manpage.