Finally implement "Total Calls Today" MCI: TT

+ Add findSystemLogEntries() to StatLog amongst others

core/system_property.js

@@ -9,17 +9,20 @@
 //
 module.exports = {
     LoginCount          : 'login_count',
+    LoginsToday         : 'logins_today',   //  non-persistent
 
     FileBaseAreaStats   : 'file_base_area_stats',   //  object - see file_base_area.js::getAreaStats
     FileUlTotalCount    : 'ul_total_count',
     FileUlTotalBytes    : 'ul_total_bytes',
 
+    //  begin +op non-persistent...
     SysOpUsername       : 'sysop_username',
     SysOpRealName       : 'sysop_real_name',
     SysOpLocation       : 'sysop_location',
     SysOpAffiliations   : 'sysop_affiliation',
     SysOpSex            : 'sysop_sex',
     SysOpEmailAddress   : 'sysop_email_address',
+    //  end +op non-persistent
 
     NextRandomRumor     : 'random_rumor',
 };