added ingredient notes + removed null constraints

cookbook/migrations/0028_auto_20200317_1901.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.4 on 2020-03-17 18:01
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0027_ingredient_recipe'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='recipeingredient',
+            name='ingredient',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='cookbook.Ingredient'),
+        ),
+    ]