fix slug generation of LeagueMatches
fix slug generation of LeagueMatches

by prepending LeagueMatch#generate_name callback, so it runs before friendly_id creates the slug which is depending on the name 
cfb-hasenheide/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide,elgrillo83/cfb-hasenheide,elgrillo83/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide,elgrillo83/cfb-hasenheide,elgrillo83/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide