Feature: ngx_http_statistics module

This module is used to do statistics on servers and upsreams (not
implemented yet)

Directives:
*) statistics_zone size;
*) statistics;

Main Feature:
*) statistics items for traffic: current requests, total requests,
   responses based on repsonse code
*) statistics items for attacks: sql injection, cross site scirpting,
   cookie poisoning, web defacement, robot mitigation challenge times...
*) returns result in JSON format

TODO:
*) support upstream statistics
*) support overview statistics, incl: version, living time, connection
   information, non-server aimed requests ...
*) support attack results from ModSecurity

Signed-off-by: paulyang <paulyang.inf@gmail.com>
Feature: add senginx's web monitor page

The demo page is used as a front end of ngx_http_statistics module.

Currently it's deployed at http://demo.senginx.org