Merge branch 'stable-3.1' of git.ispconfig.org:ispconfig/ispconfig3 into stable-3.1

Author: florian030

server/conf/nginx_vhost.conf.master

@@ -34,6 +34,7 @@ server {
         server_name <tmpl_var name='domain'> <tmpl_var name='alias'>;
 
         root   <tmpl_var name='web_document_root_www'>;
+		disable_symlinks if_not_owner;
 
 <tmpl_if name='ssl_enabled'>
 <tmpl_if name='rewrite_to_https' op='==' value='y'>