Gardaí allegedly advised the five-star Powerscourt hotel that hosting a secretive conference event co-founded by tech billionaire Peter Thiel would involve the “highest level of security risk” and require significant policing resources, including the public order unit. According to new court filings, the hotel in Enniskerry cancelled the four-day August retreat on July 3 by invoking force majeure provisions including negative media coverage, intimidating protests, staffing and security concerns, and potential legal action, new court filings show. Dialog, the group behind the meet-up, is now suing the hotel and the Powerscourt Estate for around $2.2 million for breach of contract…