Made send statistics configurable

database/database.sql

@@ -80,6 +80,7 @@ INSERT INTO `ospos_app_config` (`key`, `value`) VALUES
 ('smtp_crypto', 'ssl'),
 ('receipt_template', 'receipt_default'),
 ('theme', 'flatly'),
+('statistics', '1'),
 ('language', 'english'),
 ('language_code', 'en');