Fixed mpld3 widgets
Fixed mpld3 widgets

vascotenner/holoviews,mjabri/holoviews,ioam/holoviews,ioam/holoviews,basnijholt/holoviews,mjabri/holoviews,basnijholt/holoviews,vascotenner/holoviews,ioam/holoviews,vascotenner/holoviews,basnijholt/holoviews,mjabri/holoviews