made challenge name a required field

geogame/main/migrations/0005_auto_20200117_0023.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2.4 on 2020-01-17 00:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0004_auto_20191125_2344'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='challenge',
+            name='average',
+            field=models.PositiveIntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='challenge',
+            name='name',
+            field=models.CharField(db_index=True, max_length=255, verbose_name='Challenge Name'),
+        ),
+    ]