fix migrations in userroles

apps/account/migrations/0016_auto_20191024_0830.py

@@ -0,0 +1,24 @@
+# Generated by Django 2.2.4 on 2019-10-24 08:30
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0015_merge_20191023_1317'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='role',
+            name='role',
+            field=models.PositiveIntegerField(choices=[(1, 'Standard user'), (2, 'Comments moderator'), (3, 'Country admin'), (4, 'Content page manager'), (5, 'Establishment manager'), (6, 'Reviewer manager'), (7, 'Restaurant reviewer')], verbose_name='Role'),
+        ),
+        migrations.AlterField(
+            model_name='userrole',
+            name='establishment',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='establishment.Establishment', verbose_name='Establishment'),
+        ),
+    ]