CHICAGO — Celebrating five years in the Logan Square neighborhood, Chiara Mangiameli’s flamenco studio presented its annual showcase last weekend at the Vittum Theater. I agreed to review the performance, not quite realizing that Love Song was a student showcase. Inspired by a T.S. Elliot poem, the central figure of Studio Mangiameli’s production was its namesake Chiara Mangiameli, a DePaul…