Any Object can Mention. Previously it was only Items, which doesn't make much sense.

Also rm redundant and confusing import statement.

django_kepi/migrations/0007_auto_20190814_2220.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.1 on 2019-08-14 22:20
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_kepi', '0006_auto_20190814_2151'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='mention',
+            name='from_status',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='django_kepi.Object'),
+        ),
+    ]

django_kepi/models/mention.py

@@ -8,7 +8,7 @@ logger = logging.getLogger(name='django_kepi')
 class Mention(models.Model):
 
     from_status = models.ForeignKey(
-            'django_kepi.Item',
+            'django_kepi.Object',
             on_delete = models.DO_NOTHING,
             )
 
@@ -27,8 +27,6 @@ class Mention(models.Model):
             status,
             tags):
 
-        from django_kepi.models.actor import Actor
-
         cls.objects.filter(
                 from_status = status,
                 ).delete()