Added config for preview to swicth on featurs
Added config for preview to swicth on featurs

mtekel/digitalmarketplace-supplier-frontend,mtekel/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend,mtekel/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend,mtekel/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend