by Mel Dyer "Great coffee, delicious food..." That is the slogan for The Highlands, an Ethiopian-owned café, - a coffeehouse AND restaurant, stylishly smooshed together - slated to open, this summer, in River East's best neighborhood, ..my own Penn Branch. Penn Branch and surrounding ANC Seven Bee presently has no full-service restaurants, coffeehouses or gathering places of any sort for its middle, upper middle and working class residents - no place to celebrate a little league softball victory, a graduation ..or a promotion. When the urge to power-gab overwhelms us, clusters of Branchers drift into the middle of our quiet, tree-lined streets. Sometimes, we lean into each others' cars, while we are, out there. We obstruct afternoon strolls, with chatty clots, along our sidewalks. We hobble into each others' homes, ..crippled by the strain of standing in a driveway, for HOURS, having deprived our legs of healthy circulati...