The kids are back in school, and Store Reporter is back on the retail and restaurant beat — with far more news than we can possibly squeeze into one issue. In the next few weeks we’ll get you up to speed on all the news of summer and early fall: who’s closed, who’s moving, and who’s on the way to greater Rockville and Potomac. This week we’ll start with a look at Rockville Pike, where many businesses said goodbye in the past few months — but plenty of new ones are on the way.