Migrations + Cleanup

* adds needed migrations
* refactors forms.py (700+ lines) in main konova app
    * splits into forms/ and forms/modals and single class/topic-files for better maintainability and overview
* fixes bug in main konova app migration which could occur if a certain compensation migration did not run before

konova/migrations/0005_auto_20220216_0856.py

@@ -33,6 +33,7 @@ class Migration(migrations.Migration):
 
     dependencies = [
         ('konova', '0004_auto_20220209_0839'),
+        ('compensation', '0002_auto_20220114_0936'),
     ]
 
     operations = [

konova/migrations/0014_resubmission.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.1.3 on 2022-08-15 06:03
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('user', '0006_auto_20220815_0759'),
+        ('konova', '0013_auto_20220713_0814'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Resubmission',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('resubmit_on', models.DateField(help_text='On which date the resubmission should be performed')),
+                ('resubmission_sent', models.BooleanField(default=False, help_text='Whether a resubmission has been sent or not')),
+                ('comment', models.TextField(blank=True, help_text='Optional comment for the user itself', null=True)),
+                ('created', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='user.useractionlogentry')),
+                ('modified', models.ForeignKey(blank=True, help_text='Last modified', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='user.useractionlogentry')),
+                ('user', models.ForeignKey(help_text='The user who wants to be notifed', on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]