1. - [x] Appending required JS files in the <head> section
2. - [x] Adding required push notifications files
3. - [x] Capturing On-site events
4. - [x] API SaveOrder
5. - [x] Syncing order statuses
6. - [x] Orders feed for one time import
7. - [x] Generating unique discount codes on demand (Discounts API)
8. - [x] Product feed
9. - [x] Syncing subscribers
10. - [x] Removing subscribers
11. - [x] Syncing product reviews
12. - [x] Categories feed
13. - [x] Brands feed
14. - [x] Plugin settings
