Change image sort, thumbnails first

ram/ram/__init__.py

@@ -1,4 +1,4 @@
 from ram.utils import git_suffix
 
-__version__ = "0.0.21"
+__version__ = "0.0.22"
 __version__ += git_suffix(__file__)

ram/roster/migrations/0015_alter_rollingstockimage_options.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.1.3 on 2022-12-28 21:07
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("roster", "0014_alter_rollingstockdocument_file_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="rollingstockimage",
+            options={"ordering": ["-is_thumbnail"]},
+        ),
+    ]

ram/roster/models.py

@@ -178,6 +178,9 @@ class RollingStockImage(models.Model):
             ).update(is_thumbnail=False)
         super().save(**kwargs)
 
+    class Meta:
+        ordering = ["-is_thumbnail"]
+
 
 class RollingStockProperty(models.Model):
     rolling_stock = models.ForeignKey(