add points field to Response model to allow overriding marks

This is currently for use with negative scoring

crowdsourcer/migrations/0034_historicalresponse_points_response_points.py

@@ -0,0 +1,27 @@
+# Generated by Django 4.2.3 on 2023-09-05 09:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("crowdsourcer", "0033_alter_question_question_type"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="historicalresponse",
+            name="points",
+            field=models.FloatField(
+                blank=True, help_text="overide marks for this response", null=True
+            ),
+        ),
+        migrations.AddField(
+            model_name="response",
+            name="points",
+            field=models.FloatField(
+                blank=True, help_text="overide marks for this response", null=True
+            ),
+        ),
+    ]

crowdsourcer/models.py

@@ -230,6 +230,10 @@ class Response(models.Model):
     last_update = models.DateTimeField(auto_now=True)
     history = HistoricalRecords()
 
+    points = models.FloatField(
+        blank=True, null=True, help_text="overide marks for this response"
+    )
+
     def get_absolute_url(self):
         return reverse(
             "authority_question_edit",