Turning Ireland into a nation of apartment dwellers has not come easily. There have been problems. There’s disagreement over how high-end the apartments should be, where they should be, how dense they should be, who should own them, how concentrated their ownership should be, how well insulated and fire-safe they should be, and on and on.  The upshot was that, last year, it cost a bit more to build an apartment than a three-bed house. All things being equal, most people prefer having a front door and a garden. So developers have focused on building houses.  Glenveagh has doubled down…