Update and new files for karenderia merchant app modules

Modules

Updated files

1. components/Merchant_utility.php - new file
2. components/FoodItemWrapper.php
3. components/MerchantUserWrapper.php
4. components/MerchantWrapper.php
5. components/OrderWrapper.php
6. components/ReportsWrapper.php
7. controllers/AjaxController.php
8. controllers/ApiController.php
9. controllers/CronController.php
10. controllers/IndexController.php
11. controllers/UpdateController.php
12. translation-file/merchantappv2.php
13. views/index/application_settings.php
14. views/index/order_settings.php
15. views/index/settings_api.php
16. views/index/settings_fcm.php
17. views/index/settings_printer.php
18. Merchantappv2Module.php

Mobile app files

Updated files

1. www/css/app.css
2. www/js/app.js
3. www/js/bluetooth.js
4. www/js/escpos.js
5. www/js/template.js
6. www/index.html
7. config.xml

Database update

1. order_delivery_address = new fields service_fee,service_fee_applytax
2. location_rate = new fields free_above_subtotal,minimum_order
3. category = new fields monday_start,monday_end,sunday_end etc
4. voucher_new = new fields min_order,monday, etc
5. order_time_management = new table
6. order_time_management = new table