Resolve "Add support for group notes"

Closes #68 (closed)

aleksis/apps/alsijil/migrations/0002_group_notes.py

+# Generated by Django 3.0.8 on 2020-07-10 16:16
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('alsijil', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='lessondocumentation',
+            name='group_note',
+            field=models.CharField(blank=True, max_length=200, verbose_name='Group note'),
+        ),
+    ]