Order MemberGroup by name by default (#3452)

* Order MemberGroup by name by default.

This wasn't ideal for the old i18n-capable version of concrexit,
but we dropped that so the comment is outdated.

This does likely mean some redundant sorting is done, but that's not an
issue.

* add migration

website/activemembers/migrations/0045_alter_membergroup_options.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.2.7 on 2023-11-08 18:09
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("activemembers", "0044_alter_membergroup_photo"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="membergroup",
+            options={
+                "ordering": ["name"],
+                "verbose_name": "member group",
+                "verbose_name_plural": "member groups",
+            },
+        ),
+    ]

website/activemembers/models.py

@@ -168,7 +168,7 @@ def get_absolute_url(self):
     class Meta:
         verbose_name = _("member group")
         verbose_name_plural = _("member groups")
-        # ordering is done in the manager, to sort on a translated field
+        ordering = ["name"]
 
 
 class Committee(MemberGroup):