Commerce user guide

[Mark-H]

Needs to be added when around the time of the beta. Topics to cover:

• Managing products and catalog in commerce
• Viewing orders and all its different properties
• Communication with customers (order messages)
• Status workflow configuration / dashboard implications
• Coupons and other discounts that can be managed from the dashboard
• Rundown of the different reports
• High-level configuration. Not all of it is meant for end-users, but can't hurt to give a high level overview.
• Description of each different tab and what can be done there / what different things mean