Resolve "Tests are not created when importing via frontend"

Closes #193 (closed)

core/migrations/0022_remove_feedback_origin.py

+# Generated by Django 2.1.13 on 2019-10-12 15:11
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0021_merge_20190902_1246'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='feedback',
+            name='origin',
+        ),
+    ]