Add missing migration after upload_to change

mayan/apps/document_signatures/migrations/0002_auto_20150608_1902.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+import storage.backends.filebasedstorage
+import document_signatures.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('document_signatures', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='documentversionsignature',
+            name='has_embedded_signature',
+            field=models.BooleanField(default=False, verbose_name='Has embedded signature'),
+            preserve_default=True,
+        ),
+        migrations.AlterField(
+            model_name='documentversionsignature',
+            name='signature_file',
+            field=models.FileField(storage=storage.backends.filebasedstorage.FileBasedStorage(), upload_to=document_signatures.models.upload_to, null=True, verbose_name='Signature file', blank=True),
+            preserve_default=True,
+        ),
+    ]