Adds migration

common/djangoapps/student/migrations/0016_coursenrollment_course_on_delete_do_nothing.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.14 on 2018-07-27 01:44
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('student', '0015_manualenrollmentaudit_add_role'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='courseenrollment',
+            name='course',
+            field=models.ForeignKey(db_constraint=False, on_delete=django.db.models.deletion.DO_NOTHING, to='course_overviews.CourseOverview'),
+        ),
+    ]