Chunks: order based on item too so items are clustered together.

django_etesync/migrations/0023_auto_20200310_1556.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.0.3 on 2020-03-10 15:56
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etesync', '0022_auto_20200310_1547'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='collectionitemchunk',
+            options={'ordering': ('item', 'order')},
+        ),
+    ]

django_etesync/models.py

@@ -71,7 +71,7 @@ class CollectionItemChunk(models.Model):
 
     class Meta:
         unique_together = ('item', 'order')
-        ordering = ['order']
+        ordering = ('item', 'order')
 
     def __str__(self):
         return self.uid