Thank you for your tutorial.
Trying to install Shopkeeper3 MODX manager menu still in Russian and it seems to me column headers content comes from Shopkeeper3 tables in MODX.
INSERT INTO `modx_shopkeeper3_config` (`id`, `setting`, `value`, `xtype`) VALUES
(1, 'statuses', '[{"label":"Новый","tpl":"userMail","color":"#b2d6ff","id":1},{"label":"Принят к оплате","tpl":"userMail","color":"#c7fff7","id":2},{"label":"Отправлен","tpl":"userMail","color":"#fffdb8","id":3},{"label":"Выполнен","tpl":"userMail","color":"#c9ffc2","id":4},{"label":"Отменен","tpl":"userMail","color":"#ffc9c9","id":5},{"label":"Оплата получена","tpl":"userMail","color":"#ffdbad","id":6}]', 'array'),
(2, 'order_fields', '[{"name":"status","label":"Статус","rank":0,"id":1},{"name":"id","rank":1,"label":"ID","id":2},{"name":"date","rank":2,"label":"Время","id":3},{"name":"price","rank":3,"label":"Цена","id":4},{"name":"count_total","rank":4,"label":"Кол-во","id":5},{"name":"email","label":"Эл. адрес","rank":5,"id":6},{"name":"username","rank":6,"label":"Пользователь","id":7}]', 'array'),
(3, 'currency_rate', '[{"label":"руб.","value":"1","id":1},{"label":"грн","value":"4","id":2},{"label":"USD","value":"34","id":3}]', 'array'),
(4, 'delivery', '[{"label":"Самовывоз","price":"0","id":1},{"label":"Доставка по городу","price":"500","free_start":"2000","id":2}]', 'array'),
(5, 'payments', '[{"label":"При получении","price":"При получении","id":1},{"label":"Электронные деньги","price":"Электронные деньги","id":2}]', 'array'),
(7, 'contacts_fields', '[{"name":"field1_1","label":"Имя","id":1,"rank":0},{"rank":1,"name":"field1_2","label":"Адрес эл. почты","id":2},{"rank":2,"name":"field1_3","label":"Телефон","id":3},{"rank":3,"name":"field1_4","label":"Комментарий","id":4}]', 'array');
I guess it should be overridden with your app_tpls.js file but Russian still in place after this update & cache cleaning.
I tried you recommendations several times (your shopkeeper_download_pack + shopkeeper3 3.2.2-pl, Released Apr 16, 2015)