fix admin/css/base.css not found add ADMIN_MEDIA_PREFIX
fix admin/css/base.css not found add ADMIN_MEDIA_PREFIX

Star2Billing/cdr-stats,areski/cdr-stats,cdr-stats/cdr-stats,cdr-stats/cdr-stats,cdr-stats/cdr-stats,Star2Billing/cdr-stats,areski/cdr-stats,areski/cdr-stats,Star2Billing/cdr-stats,Star2Billing/cdr-stats,cdr-stats/cdr-stats,areski/cdr-stats