Add new pointer from Training to Teacher model

stages/migrations/0016_referent_to_teacher.py

@@ -0,0 +1,26 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stages', '0015_auto_20170717_1515'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='training',
+            old_name='referent',
+            new_name='referent_old',
+        ),
+        migrations.AddField(
+            model_name='training',
+            name='referent',
+            field=models.ForeignKey(blank=True, null=True, on_delete=models.deletion.SET_NULL, to='stages.Teacher', verbose_name='Référent'),
+        ),
+        migrations.AddField(
+            model_name='teacher',
+            name='archived',
+            field=models.BooleanField(default=False),
+        ),
+    ]