Add 480p to our regex to reduce the chance of it being matched as the season/ep or multi-ep reference. PEP8 cleanup.
Filter out releases like `Louie.S02E11.PROOFFiX.720p.BluRay.x264-DEiMOS` and `Rome.S02.DiRFiXES.720p.BluRay.x264-SiNNERS` as they are useless for our purposes.