(legacy) oops, work in progress in vpn_openvpn_client.php did commit the wrong file. new client php file will follow later today

PHP Fatal error:  Call to undefined function system_hosts_generate() in /usr/local/etc/inc/interfaces.inc on line 3129

(legacy) fix PHP Fatal error:  Call to undefined function create_gateway_quality_rrd() in /usr/local/etc/inc/gwlb.inc on line 330

setup_gateways_monitor needs rrd.inc

(legacy) fix PHP Fatal error:  Call to undefined function lock() in /usr/local/etc/inc/system.inc on line 125

traceback missing library issue, search function where lock() is used in line 125 (system_resolvconf_generate), then check use and add
missing library,

grep -r system_resolvconf_generate * | sed 's/:/ /g' | awk '{print $1;}' | sort -u

(legacy) cleanup vpn_openvpn_server.php and add help buttons (fix for https://github.com/opnsense/core/issues/297)

(legacy) add legacy_html_escape_form_data to legacy helper functions to escape array items recursive