add note about the license we decided to use for recordings

src/program/migrations/0080_auto_20200222_1547.py

@@ -0,0 +1,21 @@
+# Generated by Django 3.0.3 on 2020-02-22 14:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("program", "0079_eventinstance_uuid"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="eventproposal",
+            name="allow_video_recording",
+            field=models.BooleanField(
+                default=False,
+                help_text="Uncheck to avoid video recording. Recordings are made available under the CC BY-SA 4.0 license. Uncheck if you can not accept this license.",
+            ),
+        ),
+    ]

src/program/models.py

@@ -318,7 +318,8 @@ class EventProposal(UserSubmittedModel):
     )
 
     allow_video_recording = models.BooleanField(
-        default=False, help_text="Uncheck to avoid video recording."
+        default=False,
+        help_text="Uncheck to avoid video recording. Recordings are made available under the CC BY-SA 4.0 license. Uncheck if you can not accept this license.",
     )
 
     duration = models.IntegerField(