DFT+U with species_full_delta
Description
Add the possibility to compute the +U (and +V) using a species full delta. Fixes a problem with the labeling of the atomic orbitals associated with the species full delta.
News snippet
Add the possibility to compute the +U (and +V) using a species full delta.
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.