big migrate, add refreshing to create class method, make size, resolution and file modification fields nullable, fix ServedDirectory lastRefreshed's lack of default, remove last of easy_thumbnails

also adds some small documentation/typing fixes

viewer/migrations/0007_auto_20201103_1909.py

@@ -0,0 +1,75 @@
+# Generated by Django 3.1.2 on 2020-11-04 01:09
+
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('viewer', '0006_file_thumbnail'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ImageResolution',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('x', models.PositiveIntegerField()),
+                ('y', models.PositiveIntegerField()),
+            ],
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='fileLastModified',
+            field=models.DateTimeField(default=None, null=True),
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='initialCreation',
+            field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='lastModified',
+            field=models.DateTimeField(auto_now=True),
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='lastRefreshed',
+            field=models.DateTimeField(default=django.utils.timezone.now),
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='size',
+            field=models.PositiveIntegerField(null=True),
+        ),
+        migrations.AddField(
+            model_name='serveddirectory',
+            name='initialCreation',
+            field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='serveddirectory',
+            name='lastModified',
+            field=models.DateTimeField(auto_now=True),
+        ),
+        migrations.AddField(
+            model_name='serveddirectory',
+            name='lastRefreshed',
+            field=models.DateTimeField(default=django.utils.timezone.now),
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='resolution',
+            field=models.OneToOneField(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='file', to='viewer.imageresolution'),
+        ),
+        migrations.AddField(
+            model_name='file',
+            name='thumbnailResolution',
+            field=models.OneToOneField(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='real_file', to='viewer.imageresolution'),
+        ),
+    ]