Add a checkbox to the project create page called strict. If it is selected, once the project tasks pass their deadline, the tasks will be unpublished by the back end. If it is not selected then the tasks remain active, even after they pass their deadlines, and a warning is displayed to users claiming/uploading the task explaining that the task has passed its deadline but may still be of use to the Organisation.
Add a checkbox to the project create page called strict. If it is selected, once the project tasks pass their deadline, the tasks will be unpublished by the back end. If it is not selected then the tasks remain active, even after they pass their deadlines, and a warning is displayed to users claiming/uploading the task explaining that the task has passed its deadline but may still be of use to the Organisation.