By Lauren Zumbach, Chicago Tribune (TNS) Tent? Check. Sleeping bag? Check. Rocking chair, air mattress and insulated coffee press? Hard-charging backcountry adventurers might scoff at the idea of lugging such luxuries. But for many, getting outside doesn’t mean going off the grid, and camping retailers are rolling out items that let consumers bring at least some of the comforts of home into the great