[invoices] Quantities can be non-integers

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

apps/member/migrations/0007_auto_20210313_1235.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2.19 on 2021-03-13 11:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('member', '0006_create_note_account_bde_membership'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='membership',
+            name='roles',
+            field=models.ManyToManyField(related_name='memberships', to='permission.Role', verbose_name='roles'),
+        ),
+        migrations.AlterField(
+            model_name='profile',
+            name='promotion',
+            field=models.PositiveSmallIntegerField(default=2021, help_text='Year of entry to the school (None if not ENS student)', null=True, verbose_name='promotion'),
+        ),
+    ]