Introduced StockArticle and a special page for ordering from stock. StockChanges will be created and the StockArticle.quantity
updated in 'order.close!'.
OrderResult tables are removed. Data consistency is now possible through new article.price-history (ArticlePrice).
Balancing-workflow needs to be updated.
Upgraded to rails 2.2.2 and replaced complex foodsoft.rb-loader with simple
initializers/load_app_config.rb. Multiple foodcoops option is temporarly deactivated.
