Missing migration from when we added the date format.

src/economy/migrations/0007_auto_20190327_0936.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.1.7 on 2019-03-27 08:36
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('economy', '0006_auto_20190120_1642'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='expense',
+            name='invoice_date',
+            field=models.DateField(blank=True, help_text='The invoice date for this Expense. This must match the invoice date on the documentation uploaded below. Format is YYYY-MM-DD.', null=True),
+        ),
+        migrations.AlterField(
+            model_name='revenue',
+            name='invoice_date',
+            field=models.DateField(blank=True, help_text='The invoice date for this Revenue. This must match the invoice date on the documentation uploaded below. Format is YYYY-MM-DD.', null=True),
+        ),
+    ]