add chat box

judge/migrations/0100_auto_20200127_0059.py

@@ -0,0 +1,21 @@
+# Generated by Django 2.2.9 on 2020-01-27 00:59
+
+import django.core.validators
+from django.db import migrations, models
+import judge.models.problem_data
+import judge.utils.problem_data
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('judge', '0099_custom_checker'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='problemdata',
+            name='custom_checker',
+            field=models.FileField(blank=True, null=True, storage=judge.utils.problem_data.ProblemDataStorage(), upload_to=judge.models.problem_data.problem_directory_file, validators=[django.core.validators.FileExtensionValidator(allowed_extensions=['py'])], verbose_name='custom checker file'),
+        ),
+    ]