People today in Fishtown really like their roundabout. The site visitors-calming circle the place York Avenue and Frankford and Trenton Avenues fulfill has its personal Fb supporter webpage and a new Twitter handle. Neighbors turned it into a pop-up roller disco the night before it opened last September, skating, drinking beer, dancing and celebrating. Kids rode their bikes around and about. It was all fun and games till a mysterious landscaper or landscapers regarded on the internet as roundabout19125 commenced tending to the scrubby patch in the centre. A garden was planted and attractive rocks added — largely, many mentioned, to protect it from jerks driving through it or executing…