Terry Clune can’t talk about it.  In a blue blazer and open collar shirt, he is sitting in the boardroom of 14 St Stephen’s Green, an impeccably restored Georgian townhouse.  Elaborate cornices cover the vast ceiling and a sash window is open to a chiming Luas slipping by and the shouts of children playing in the park.  But there is silence in the room. Unexpected pauses follow unexpected questions.  Years of frustration at the back of Clune’s throat as he tries to quell the desire to open up about Connect Ireland- the ambitious government-backed grassroots scheme he fronted, along with…