Move apps in main directory

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

registration/migrations/0002_auto_20230110_2031.py

@@ -0,0 +1,29 @@
+# Generated by Django 3.2.13 on 2023-01-10 19:31
+
+import datetime
+from django.db import migrations, models
+import phonenumber_field.modelfields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('registration', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='participantregistration',
+            name='birth_date',
+        ),
+        migrations.AddField(
+            model_name='studentregistration',
+            name='birth_date',
+            field=models.DateField(default=datetime.date.today, verbose_name='birth date'),
+        ),
+        migrations.AlterField(
+            model_name='studentregistration',
+            name='responsible_phone',
+            field=phonenumber_field.modelfields.PhoneNumberField(default='', max_length=128, region=None, verbose_name='responsible phone number'),
+        ),
+    ]