tweaking analog referer reports

Analog reports for sssbpt.org were becoming too large due to the referer report listing all the webmail sites which were being used to read the Sai Spiritual Showers emails. Added the following lines to the config file to make the report more manageable:

REFFLOOR 1000s
#list only those with more than 1000 ref in last 7 days
REFREPEXCLUDE http://mail.google.com/* 
REFREPEXCLUDE http://*mail* 
REFREPEXCLUDE http://sss.sssbpt.org/sssbpt/?p=confirm&uid*