temporary renamed is_errordocs field back to errordocs

install/sql/ispconfig3.sql

interface/web/sites/form/web_domain.tform.php

interface/web/sites/lib/lang/en_web_domain.lng

interface/web/sites/templates/web_domain_edit.htm

interface/web/themes/default/templates/main.tpl.htm

server/conf/vhost.conf.master

server/plugins-available/apache2_plugin.inc.php