Add the ability to pass Order Status filters into the view.

• No UI, just the capability
• Filter based on 1 or more status items.

Based on: https://github.com/woocommerce/woocommerce-mobile/issues/89

FluxC

• Add support for passing an order status filter to the API. Response payloads should also include the applied filter.
• Add Instrumentation tests where necessary
• Add some test features to the example app

UI

• Add support for passing a filter when fetching fresh orders from the api
• Add support for passing a filter to query the database
• Retain applied order status filter across device configurations
• The OrderListFragment should support setting an order status filter on creation