Support purchases on cycles
Merge branch 'stable' of https://gitlab.com/noosfero/noosfero into distribution-plugin

Conflicts:
	app/controllers/application_controller.rb
	lib/noosfero/plugin/routes.rb
	test/unit/contact_sender_test.rb
Finish renaming of orders to sales/purchases
Fix validation
Update purchases when sales are confirmed/unconfirmed
Search purchase by supplier and fix item creation
Don't drop table
Make orders filter work
Unify filter/actions translations
Revert missing code
Protect against empty string
Don't render layout on ajax requests
Refactor orders' item columns
Continue refactoring
Use _localized to strip unsignficant zeros
Do not put scrollbars on table header
Add missing file
Merge branch 'distribution-plugin' into cirandas

Conflicts:
	plugins/shopping_cart/controllers/shopping_cart_plugin_controller.rb
	plugins/shopping_cart/db/migrate/20131226125124_move_shopping_cart_purchase_order_to_orders_plugin_order.rb