Cheers filled UCLA’s Pauley Pavilion on Friday as seniors in the Class of 2015 graduated. More than 5,500 graduates — decked out in academic regalia modified by glittery words on mortarboards, fragrant leis, novelty sunglasses and more — celebrated the completion of their degrees in person at two ceremonies hosted by the UCLA College, the university’s primary undergraduate unit. The split celebrations, at 2 p.m. and 7 p.m., each packed the famed arena to near-capacity.