Added error alert when importing invalid backup
Added error alert when importing invalid backup

bananafish911/SmartReceiptsiOS,wbaumann/SmartReceiptsiOS,wbaumann/SmartReceiptsiOS,EvsenevDev/SmartReceiptsiOS,EvsenevDev/SmartReceiptsiOS,bananafish911/SmartReceiptsiOS,EvsenevDev/SmartReceiptsiOS,wbaumann/SmartReceiptsiOS