How to setup server side in any our app engine:
https://www.youtube.com/watch?v=FA8OBrAA8bA

Key features:

• Build your own product and buy eg. pizza, sandwich, drinks …
• Full Paypal integration with Instant Payment Notification
• Content management system
• Full social media integration: Facebook, Twitter, Youtube
• Google maps integration
• 8 languages included for all web and products (all text saved in single files): English, Italian, Spanish, German, French, Russian, Portuguese, Polish
• SEO solution for each language
• Payment on deliver support
• E-marketing newsletter included – admin can send any messages to single user or to all users
• Sell any type of product
• EXTREME EASY administration panel
• Easily editable template
• Unique and beautiful design
• Support any language
• PDF – step-by-step guide
• All graphics included
• Searching component included
• WYSIWYG editor included
• E-mail notification about status of your order