Order Module Usability Improvements

Additional Improvements To Orders Module:

• Shipper details can’t be edited on single shipper orders
• Special instructions no longer duplicate when adding new stops to single shipper orders 
• Improved date selector on the order form
• Search for customers by shortcode when creating a new order
• Full details of each stop will show by default in a multi-stop order, instead of a minimized view
• Edits to the billing address now reflect properly on the invoice
• Details on a multi-stop order created from quick quote can be edited
• Single shipper orders with multiple consignees no longer shows error message