extend api_test with second to-many relationship
extend api_test with second to-many relationship

only using one caused a bug in the router, so we have to check if multiple
work fine

theduke/api2go,greyhwndz/api2go,dennisfaust/api2go,dfeyer/api2go,interlock/api2go,dennisfaust/api2go,interlock/api2go,dfeyer/api2go,manyminds/api2go,manyminds/api2go,theduke/api2go,greyhwndz/api2go