Make device token revokation more explicit

src/pretix/base/migrations/0116_auto_20190402_0722.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.1.5 on 2019-04-02 07:22
+
+import django.db.models.deletion
+import jsonfallback.fields
+from django.db import migrations, models
+
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0115_auto_20190323_2238'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='device',
+            name='revoked',
+            field=models.BooleanField(default=False),
+        ),
+    ]