reformat history to comply with nvd3
reformat history to comply with nvd3

mvexel/maproulette,osmlab/maproulette,osmlab/maproulette,osmlab/maproulette,osmlab/maproulette,mvexel/maproulette,mvexel/maproulette,mvexel/maproulette,Crashfreak/maproulette,Crashfreak/maproulette,Crashfreak/maproulette,Crashfreak/maproulette