add license/attribution info for feed images

audio/migrations/0011_feed_image_license.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.1.7 on 2021-03-16 16:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('audio', '0010_episode_episode_number'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='feed',
+            name='image_license',
+            field=models.SmallIntegerField(choices=[(1, 'Public Domain'), (2, 'Unknown'), (3, 'CC BY-SA 2.5'), (4, 'CC BY-SA 3.0')], default=2),
+        ),
+    ]

audio/migrations/0012_auto_20210316_1053.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.1.7 on 2021-03-16 17:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('audio', '0011_feed_image_license'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='feed',
+            name='image_attribution',
+            field=models.CharField(default='', max_length=255),
+        ),
+        migrations.AddField(
+            model_name='feed',
+            name='image_attribution_url',
+            field=models.URLField(blank=True, max_length=255),
+        ),
+        migrations.AddField(
+            model_name='feed',
+            name='image_title',
+            field=models.CharField(default='', max_length=255),
+        ),
+        migrations.AddField(
+            model_name='feed',
+            name='original_image_url',
+            field=models.URLField(default='', max_length=255),
+        ),
+    ]

audio/migrations/0013_feed_image_license_jurisdiction.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.1.7 on 2021-03-16 17:54
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('audio', '0012_auto_20210316_1053'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='feed',
+            name='image_license_jurisdiction',
+            field=models.TextField(default=''),
+        ),
+    ]