Complete refactoring of orders-workflow.

OrderResult tables are removed. Data consistency is now possible through new article.price-history (ArticlePrice).
Balancing-workflow needs to be updated.

test/fixtures/orders.yml

@@ -1,23 +1,16 @@
 # == Schema Information
-# Schema version: 20090102171850
+# Schema version: 20090120184410
 #
 # Table name: orders
 #
 #  id                 :integer(4)      not null, primary key
-#  name               :string(255)     default(""), not null
-#  supplier_id        :integer(4)      default(0), not null
-#  starts             :datetime        not null
+#  supplier_id        :integer(4)
+#  note               :text
+#  starts             :datetime
 #  ends               :datetime
-#  note               :string(255)
-#  finished           :boolean(1)      not null
-#  booked             :boolean(1)      not null
+#  state              :string(255)     default("open")
 #  lock_version       :integer(4)      default(0), not null
 #  updated_by_user_id :integer(4)
-#  invoice_amount     :decimal(8, 2)   default(0.0), not null
-#  deposit            :decimal(8, 2)   default(0.0)
-#  deposit_credit     :decimal(8, 2)   default(0.0)
-#  invoice_number     :string(255)
-#  invoice_date       :string(255)
 #
 
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html