Shopkit v1.1.1

• Bug fixes
  • More reliable staff notification emails
  • More reliable download links
  • More reliable discount calculations
  • Better calculation for updateStock() function
  • Remove reliance on mime_content_type() for gateway logos
  • Include shipping in Stripe gateway calculations
  • Fix typo in German language file
  • Add page text to cart.php template
  • Fix broken variables on process.php for PayPal gateway
  • Only show "From" in price button if there is more than one variant
• Design and UI
  • Improved admin layout for discount codes & gift certificates
• Enable panel installation from browser
• Use default language instead of hardcoded en for updating order files on confirmation
• Add Spanish language option
• Full seller and buyer address info on PDF invoices