Ronan Group Real Estate (RGRE) has closed the final part of a series of transactions, worth over €1.3 billion, involving some of the most high-profile sites and offices in Dublin. In an intense six months, the development company founded by Johnny Ronan and its partners have pulled off a string of deals in Dublin with the final aspects of the transactions closing on Thursday.  The Irish developer took full ownership and control of the Waterfront South Central site in Dublin’s north docklands by agreeing to swap its interest in Meta’s European headquarters in Dublin 4, Fibonacci Square, with its co-investor…