Add missing model event log registration. Remove debug statement.

mayan/apps/documents/apps.py

@@ -354,4 +354,5 @@ class DocumentsApp(MayanAppConfig):
             dispatch_uid='create_default_document_type'
         )
 
+        registry.register(DeletedDocument)
         registry.register(Document)

mayan/apps/documents/models.py

@@ -195,7 +195,6 @@ class Document(models.Model):
 
     def save(self, *args, **kwargs):
         user = kwargs.pop('_user', None)
-        print '!!!!!!!!!!', user
         new_document = not self.pk
         super(Document, self).save(*args, **kwargs)