Added translations for romanian error documents and included

missing <!--#set var="CONTENT_LANGUAGE" value="ro"-->.

Translated by: Andrei Besleaga <andreutz@hotmail.com>
Reviewd by: Cristian Dinca <cristi_ad@yahoo.com>

Also added translators info to README and alphabetized the
list of available languages.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@98681 13f79535-47bb-0310-9956-ffa450edef68