Changing the mandatory fields when creating a project/adding an organisation

[AmelieAnnemie]

• The feature was discussed in discussions of this repository.
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Description 💡

Changing the mandatory fields when creating a project/adding an organisation

Currently, the ‘Total budget’ field must always be filled in when adding an organisation. It must also be possible to add organisations that do not contribute a budget.
The ‘Total budget’ field is therefore not a mandatory field. If nothing is entered in this field, a 0 can be entered systematically. However, no 0 should then be shown in the ‘Total budget’ overview. The same applies to the currency display in the overview.

Please make adjustments for all languages.