Merge branch 'feature/IMP_energy_selfcomption_adjustment_of_invoicings_configurations' into 'feature/IMP_energy_selfconsumption_invoicing_acquired_power'

[IMP] energy_selfcomption: adjustment of invoicing configurations

See merge request !236

For some reason when executing unit testing and validating this part of the code it raises because it can't found any record in inscriptions_ids if called from the selfconsumption model instead of the project.

[FIX] energy_selfconsumption: inscription_ids not found and raising incorrect error when unit testing.

For some reason when executing unit testing and validating this part of the code it raises because it can't found any record in inscriptions_ids if called from the selfconsumption model instead of the project.