A popular restaurant and comedy club that were temporarily closed because of a rat infestation in Maine’s largest city are closed again, this time for renovations. The Porthole, Comedy Connection and Harbour’s Edge banquet hall were closed Sept. 13 by a city health inspector for numerous violations and then reopened two days later. Kenneth MacGowan, the wharf owner and landlord, tells the Portland Press Herald, that Porthole owner Oliver Keithly informed him that he may vacate the building at month’s end. But Keithly says he hopes to work out a plan to renovate and reopen. He says he’d planned kitchen renovations this winter but accelerated the schedule after the health inspection and press coverage.