1.0.5 - build 2014.05.14

- Bug fixes:
-- Fix to St Helena scenario to add paper trading
-- Fix for the Civic Leader achievement which wasn't triggering
-- Fix for road-related warnings

- Sandbox changes:
-- Added a new "boundless" city size, where the city takes up the entire visible area
-- Tweaked metal distribution to be more generous

- Sandbox trade bug fixes:
-- neighbors don't offer to buy resources that you can't produce
-- neighbors don't offer to sell you resources that you can't use (like gold)
-- removed duplicate resources from buy/sell offers