Many folks were breathing easier Monday after back-to-back events over the weekend in Marshall Park seemed to go off without a hitch. No significant problems were reported, said Sacramento Police Sgt. Norm Leong, the department's spokesman. Neighbors surrounding the park praised the way the Bloc Concert Series' Saturday concert and Sunday's Midfest Summer Celebration were managed by the city and organizers. Paragary Restaurant Group and Lomeli Events managed Saturday's events, while Midtown Business Association (MBA) and T & M Organization for the Arts managed Sunday's. The vibe from Sunday's festival got a special thumbs-up from residents. The park at 915 27th St. came alive with a thr