LONDON, July 21 (Reuters) - Ocado Group, the British online supermarket and OKEPLAY777 technology company, has "never been busier" in talking to potential new purchasers of its automated warehouse technology, its boss said on Thursday. "We have never been busier in talking to (potential new) clients than we are now and we've never had more visitors to our sites than we have at the moment, so there's a...