add vrrp sync group parsing
added vrrp sync group GUI
if quoted config like notify_master, notify_backup is not quoted in
form field, it would cause the config not correctly parsed in
read_config in parse.php, which cause the config to be ignored and
not saved
add menu as inlcude template, save time to modify each file if menu
changes, and save code space too
forget to include header menu in global_settings.php