* refactors remove view for kom, eiv, oek and ema
* introduces BaseRemoveModalFormView
* moves html blocking logic from BaseModalForm into BaseModalFormView
* drops identifier handling on all edit-forms (identifier editing has been disabled on the frontend for a while now)
* updates test cases
* updates form caption for checking and recording action (less intimidating)
* optimizes district column width
* fixes bug on frontend parcel fetching on detail view
* adds extended tooltip for title column on index tables
* retraslates 'Law' to 'Rechtsgrundlage'
* updates Django to 4.x and other packages (if possible) to latest versions
* Attention: Requires postgresql >= 12.0
* updates code fragments to match requirements of newer package versions
* adds configurable label-input ratio setting for forms and specializes for RemoveModalForm
* enhances form body html structure for better UX and usage of label-input ratio
* fixes bug where deduction of a recorded intervention could be deleted from the eco account detail view
* improves check_for_recorded_instance() logic
* improves rendering of detail view on compensation-like objects to highlight missing data
* adds needed migrations
* refactors forms.py (700+ lines) in main konova app
* splits into forms/ and forms/modals and single class/topic-files for better maintainability and overview
* fixes bug in main konova app migration which could occur if a certain compensation migration did not run before
