There is a stillness in the boardroom of Cardinal Capital on the ground floor of Simmonscourt House in Dublin 4. It is deliberately like that to allow discreet meetings to take place with companies seeking new investment, developers raising fresh finance or the numerous deals that Cardinal is working on at any one time.  Behind a frosted glass wall can be glimpsed a more open-plan office, filled with a team of more than 20 people working on the twin divisions of Cardinal’s business: private equity and real estate. Its private equity funds have invested in well-known mid-market Irish businesses from…