import: csv header for resources

app/models.py

@@ -51,6 +51,12 @@ class AbstractResource(db.Model):
         self.updated = datetime.utcnow()
         db.session.commit()
 
+    @classmethod
+    def csv_header(self):
+        return [
+            "id", "description", "added", "updated", "destroyed"
+        ]
+
     def csv_row(self):
         return [
             self[x] for x in self.csv_header()