removing all parameter from challenges call (confusing) and fixing challenges query building
removing all parameter from challenges call (confusing)
and fixing challenges query building

osmlab/maproulette,mvexel/maproulette,osmlab/maproulette,osmlab/maproulette,mvexel/mr-tnav,Crashfreak/maproulette,mvexel/maproulette,Crashfreak/maproulette,osmlab/maproulette,Crashfreak/maproulette,mvexel/maproulette,mvexel/maproulette,Crashfreak/maproulette,mvexel/mr-tnav