Fix migrations

TODO - need to ensure moved models are *moved* rather than deleted and recreated!

RIGS/migrations/0040_delete_rigsversion.py

@@ -0,0 +1,16 @@
+# Generated by Django 3.0.3 on 2020-04-15 18:40
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('RIGS', '0039_delete_eventcrew'),
+    ]
+
+    operations = [
+        migrations.DeleteModel(
+            name='RIGSVersion',
+        ),
+    ]

assets/migrations/0012_remove_asset_next_sched_maint.py

@@ -1,17 +0,0 @@
-# Generated by Django 3.0.3 on 2020-03-18 00:24
-
-from django.db import migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('assets', '0011_auto_20200317_2006'),
-    ]
-
-    operations = [
-        migrations.RemoveField(
-            model_name='asset',
-            name='next_sched_maint',
-        ),
-    ]

assets/migrations/0018_auto_20200415_1940.py

@@ -1,4 +1,4 @@
-# Generated by Django 3.0.3 on 2020-03-17 20:06
+# Generated by Django 3.0.3 on 2020-04-15 18:40
 
 from django.db import migrations, models
 
@@ -6,7 +6,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('assets', '0010_auto_20200219_1444'),
+        ('assets', '0017_add_audit'),
     ]
 
     operations = [