[Subsidies] Create IndividualBudget model to model personal Subsidies

We need to modify the subsidy object to correctly represent subsidies received from individuals for grants related to open-access publishing and other sources.

Proposed changes:

• Remove Funder model altogether, migrate its fundref_id field to Organization
• Modify Grant's Funder to Organization instead.
• Add individual_budget: IndividualBudget optional field to Subsidy
• Create new Subsidy type for "Individual Budget"
• Make new type as incompatible with renewable: True
• Mandate that start and end date of Subsidy are the same
• Modify Organization support history page with new section containing money received associated to an IndividualBudget.

Individual Budget model:

A flexible structure to collect information about the budget origin of Subsidy money.

• description: str
• organization: Organization
• recipient: Foreign[Contributor]?
• research_budget_number: str?
• grant_number: str?
• fundref_id: str? - why not a Funder?
• ... may grow in the future

Workflow

• Create an associated IndividualBudget from which the Subsidy amount is withdrawn. Number and recipient are optional.
• Create a new Subsidy, linking to the previously created IndividualBudget .

added impactmedium priorityhigh typefeature ⭐️ labels

set weight to 5

changed iteration to Two-week Sprint Nov 17, 2024 - Nov 30, 2024

assigned to @gkatsikas

added time estimate of 2d

added workflowin-progress label

marked the checklist item Modify Grant's Funder to Organization instead. as completed

added workflowblocked label and removed workflowin-progress label

marked the checklist item Modify Grant's Funder to Organization instead. as incomplete

changed title from [Subsidies] Modify Subsidy to model contributions from (research) grants to [Subsidies] Create IndividualBudget model to model personal Subsidies

changed the description

marked the checklist item Add individual_budget: IndividualBudget optional field to Subsidy as completed

added workflowin-progress label and removed workflowblocked label

added 30m of time spent

marked the checklist item Create new Subsidy type for "Individual Budget" as completed

marked the checklist item Make new type as incompatible with renewable: True as completed

marked the checklist item Mandate that start and end date of Subsidy are the same as completed

marked the checklist item Modify Organization support history page with new section containing money received associated to an IndividualBudget. as completed

added 2h 30m of time spent