make graph_url work correctly, add stats_url parameters to get index links more flexible, fix some notices, make 'L' detection better, fix some warnings, allow desc on rrd_field, correct basename (no path in there)
make graph_url work correctly, add stats_url parameters to get index links more flexible, fix some notices, make 'L' detection better, fix some warnings, allow desc on rrd_field, correct basename (no path in there)

KaiRo-at/php-utility-classes