WIP: Shop

Improves the shop in order to make it available for online purchases

Features

• Have products
• Link products to a contribution
• Link products to a pack
• User has baskets
• User has a current basket
• Add product to current basket
• Add packs to current basket
• Buy a basket
• Pay for your online order
• View your order history
• View your bought products history
• View bought products
  • Sorted by product
  • Sorted by delivery status
• Update delivery status of sold products
• Send an email to all customers of a specific product
• Manually sell a product to anyone from the admin
  • Specify any payment mean
  • Sell a pack from the admin