Improve comparison option for new plots #17
Description
The plots I have recently added are not yet behaving very well when the pipeline is used to compare runs. Currently, all plots are just multiplied even those where the data from different snapshots can be over-plotted.
I would also suggest to only show the combined plots (i.e. not the plots for individual galaxies) when runs are compared. We do not match haloes and comparing individual galaxies by their halo id might be misleading. This is especially the case when comparing different box sized.