More fixes

- Allow stock item creation for inactive parts
- Better handling of successful stock item creation
- Disable fields rather than hiding them

InvenTree/stock/migrations/0067_alter_stockitem_part.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.5 on 2021-11-04 12:40
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0074_partcategorystar'),
+        ('stock', '0066_stockitem_scheduled_for_deletion'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='stockitem',
+            name='part',
+            field=models.ForeignKey(help_text='Base part', limit_choices_to={'virtual': False}, on_delete=django.db.models.deletion.CASCADE, related_name='stock_items', to='part.part', verbose_name='Base Part'),
+        ),
+    ]