[plotly] fixes for mrd
[plotly] fixes for mrd

dhhjx880713/GPy,mikecroucher/GPy,esiivola/GPYgradients,avehtari/GPy,befelix/GPy,avehtari/GPy,befelix/GPy,ysekky/GPy,befelix/GPy,esiivola/GPYgradients,dhhjx880713/GPy,mikecroucher/GPy,befelix/GPy,dhhjx880713/GPy,esiivola/GPYgradients,SheffieldML/GPy,mikecroucher/GPy,SheffieldML/GPy,ysekky/GPy,SheffieldML/GPy,esiivola/GPYgradients,dhhjx880713/GPy,avehtari/GPy,avehtari/GPy,mikecroucher/GPy,ysekky/GPy,ysekky/GPy,SheffieldML/GPy