Attempt to add error bars to the metrics predictionsby the tuner dashboard. However, I'm not sure ifit's correct to use mean-sigma values for all parameters.I also need to add shading of error bounds.For #910.
Eliminating l_nu_grid_dependent as requested.For ticket #926.Results are BFB identical.
Eliminating l_use_buoy_mod_Km_zm.For ticket #926if we use a buoyancy-modified expression for Km_zm.Results are BFB identical.
Eliminating l_iter_xp2_xpyp flag.For ticket #926.Results are BFB identical.