Add a related_name for the activity relation

opentech/apply/activity/migrations/0001_initial.py

@@ -23,7 +23,7 @@ class Migration(migrations.Migration):
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                 ('timestamp', models.DateTimeField(auto_now_add=True)),
                 ('message', models.TextField()),
-                ('submission', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='funds.ApplicationSubmission')),
+                ('submission', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='funds.ApplicationSubmission', related_name='activities')),
                 ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
             ],
             options={

opentech/apply/activity/models.py

@@ -5,7 +5,7 @@ from django.db import models
 class Activity(models.Model):
     timestamp = models.DateTimeField(auto_now_add=True)
     user = models.ForeignKey(settings.AUTH_USER_MODEL)
-    submission = models.ForeignKey('funds.ApplicationSubmission')
+    submission = models.ForeignKey('funds.ApplicationSubmission', related_name='activities')
     message = models.TextField()
 
     class Meta: