Added migration file to dataset_repo (#2333)

cvat/apps/dataset_repo/migrations/0005_auto_20201019_1100.py

+# Generated by Django 3.1.1 on 2020-10-19 11:00
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dataset_repo', '0004_rename'),
+    ]
+
+    operations = [
+        migrations.AlterModelTable(
+            name='gitdata',
+            table=None,
+        ),
+    ]