edited games API to support is_siftr and siftr_url
edited games API to support is_siftr and siftr_url

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