adjoint gradients are zero for species tutorial

[bigfooted]

When running gradient_validation.py of the tutorial case:
https://su2code.github.io/tutorials/Species_Transport/
the adjoint gradients are zero.
This is due to the writing of compact restart files. If you set WRT_RESTART_COMPACT= YES, then the setup works. Some additional fields might need to be written to the file.

[bigfooted]

Strange thing is that if I do not write the residual information to file, it works:

Does not work:

VOLUME_OUTPUT= RESIDUAL, PRIMITIVE

works:

VOLUME_OUTPUT= PRIMITIVE

[pcarruscag]

Something wrong in the rules to either read or write the volume sensitivities