Add documentation and source

Added documentation, source and extra files.

source/orm/library/migrations/0003_person_picture.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2 on 2021-04-12 22:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('library', '0002_add_book_year'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='person',
+            name='picture',
+            field=models.ImageField(max_length=256, null=True, upload_to='pictures', verbose_name='picture'),
+        ),
+    ]