Wave Staff Report SOUTH GATE — County Supervisor Janice Hahn joined county library officials, local leaders and community members March 20 to celebrate the reopening of Leland R. Weaver Library after a year-long $1.3 million renovation. “I know this has been a long year for so many people in South Gate who missed your library — but I hope you think it was worth the wait,” Hahn told the crowd. “This renovation represents a real investment here in…