Fixed Dimensioned.__repr__ and added Dimensioned.__unicode__
Fixed Dimensioned.__repr__ and added Dimensioned.__unicode__

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