changed image_decoder_media to match_media to be consistent with mysql
changed image_decoder_media to match_media to be consistent with mysql

tl-its-umich-edu/ARISGames-server,ARISGames/server,tl-its-umich-edu/ARISGames-server,ARISGames/server,ARISGames/server,tl-its-umich-edu/ARISGames-server,ARISGames/server,tl-its-umich-edu/ARISGames-server