Commerce Message Helper

This is the little brother of the Commerce Message module: While Commerce Message is a throw-together of a handful functionalities rolled for Kickstarter2, this one does the minimal thing you need to send commerce order related messages:

• It checks if the message has a entityreference field field_commerce_order (configured with variable commerce_messagehelper_fieldname)
• If yes, it adds an argument !order-summary that displays the view commerce_cart_summary (configured with variable commerce_messagehelper_viewname)

This way we can include the order sumary in a message.