make y-axis scale correctly for data and don't show label, fixes #190
make y-axis scale correctly for data and don't show label, fixes #190

johanneswilm/eha-nutsurv-django,eHealthAfrica/nutsurv,eHealthAfrica/nutsurv,johanneswilm/eha-nutsurv-django,eHealthAfrica/nutsurv,johanneswilm/eha-nutsurv-django