Added the money-mongoid gem. This gem provides integration for the RubyMoney money gem with Mongoid. This gem's Mongoid integration is superior to RubyMoney's own money-rails gem.
Configured the money gem to use the Euro as the default currency. Set the application locale to NL so number formatting is as expected.
Added a price field to the Product model, and updated the seed file to include product prices.
Added helper methods to Product for easy tax calculations. Added the rails_config gem to help with custom configuration elements (such as the tax percentage).
Added price methods to the Cart and CartItem models.
Updated the frontend views to display the product/cart prices.
Merge branch 'develop-product-prices' into develop