[FIX] energy_selfconsumption: next_period not computing correctly when applying a different start_date

C2/ Implementation delivered_energy_invoice_format

See merge request !265

Merge branch 'feature/IMP_energy_selfconsumption_contract_generation_improvment' into 'NOT_MERGE/c2_implement_branch'

C2/Implementation merge contract generation

See merge request !264

This reverts commit af6df440.

Rebase error.

This reverts commit d0d2f2f2.

Rebase error

In this commit we finish defining how to handle the different templates using the _get_name_invoice_report() method to tell the action the name of the template to use.

To replace the initial idea, I am thinking of adding a new item to the "print" button that allows access to a new energy delivery report.

At this point I am not being able to get the action to work correctly.

[IMP] energy_selfconsumption: send invoicing reminder for energy delivered projects.

See merge request !246

[MERGE] Merge branch 'feature/IMP_energy_selfconsumption_add_unit_testing_invoicing_energy_delivered' into 'dev'

[IMP] energy_selfconsumption: add unit testing invoicing energy delivered

See merge request !261

[IMP] energy_selfconsumption: invoicing energy delivered

See merge request !247