Update Spanish translation.

* manual/style/lang/es.xml: Bring text snippets up to date
* manual/bind.xml.es, manual/custom-error.xml.es: New translations

Submitted by: Jesus Blanco <blanco bitrock.com>
Reviewed by: Daniel Lopez


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@125652 13f79535-47bb-0310-9956-ffa450edef68