Stats Calculator

Calculates the following stats:

Global

    Total PA’s 
    % Cover of PA’s (towards AICHI Target) Broken down by Terrestrial, Marine and Coastal 
    PA’s with IUCN Category (also percentage)
    Number of types of designations (there are a lot apparently, as countries make them up)
    Total PA’s by designation 
    Number of countries providing data

N.B. PA team requested that there be a map showing the regions
Country

    Total PA's
    % cover of PA’s 
    No PA’s with IUCN Category 
    Number of types of designations (there are a lot apparently, as countries make them up) 
    Total PA’s by designation 


Adds also stats tables for the output of geoprocessing statistics (regional_statistics, country_statistics) and the Regions table (was missing).

Tests on:
test/unit/stats_test.rb

Module on:
lib/modules/stats.rb