Found semi-serious labeling errors.

Got mixed up with PB1/PB2 labels in the subtype maps (occurred quite
early on).
Looks like the right trees were run but PB1 and PB2 labels were
switched. It only affects the visibility of PB1-PB2 reassortants on
trees when using discrete traits though, so nothing has to be redone.

Also including the genomic trees grid figure for supplementary info.