statistics module added

statistics module added
Merge remote-tracking branch 'origin/master' into s-8.7stat-registration-Overview
Resolved header conflict

Resolved header conflict
local

local
User registration statistics

User registration statistics
Statistics with percentage count

Statistics with percentage count
Merge branch 'master' of https://github.com/subodh4codaemon/redlemon

Conflicts:
	application/models/lead_model.php
	application/views/common/header.php
	application/views/data_validation/auto_correct/add_rule.php
	public/js/user_management.js