[11.0][MIG] base_external_dbsource_sqlite: Migration to v11.0

[UPD] README.rst

[UPD] Update base_external_dbsource_sqlite.pot

base_external_dbsource_sqlite/models/__init__.py

@@ -1,3 +1 @@
-# -*- coding: utf-8 -*-
-
 from . import base_external_dbsource

base_external_dbsource_sqlite/models/base_external_dbsource.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2011 Daniel Reis
 # Copyright 2016 LasLabs Inc.
 # License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
@@ -54,6 +53,6 @@ class BaseExternalDbsource(models.Model):
             with record.connection_open() as connection:
                 cur = connection.execute(sqlquery, sqlparams)
                 if metadata:
-                    cols = cur.keys()
+                    cols = list(cur.keys())
                 rows = [r for r in cur]
         return rows, cols