Add ability to mark event checklists as Large Event

This just disables the checks to allow the rest of it to be filled out for large events, though I expect paper forms may still be used...

RIGS/migrations/0040_auto_20200925_2141.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.1 on 2020-09-25 20:41
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('RIGS', '0039_auto_20200915_0937'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='eventchecklist',
+            name='medium_event',
+        ),
+        migrations.AddField(
+            model_name='eventchecklist',
+            name='event_size',
+            field=models.IntegerField(choices=[(0, 'Small'), (1, 'Medium'), (2, 'Large')], default=0),
+            preserve_default=False,
+        ),
+    ]