Implemented: FS#1025 - Harddisk Quota Usage

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

interface/web/sites/lib/module.conf.php

interface/web/sites/list/user_quota_stats.list.php

interface/web/sites/templates/user_quota_stats_list.htm

interface/web/sites/user_quota_stats.php

interface/web/sites/web_sites_stats.php

server/mods-available/monitor_core_module.inc.php