Fix Errors on OC and Multimerch

Correction of some multimerch integration and installation errors and theme update, 1. Install theme updates - Theme updates includes easy integration of Multimerch and Theme 2. Mobile version shows error when selecting “Paystack” payment. I have disabled Onepage checkout module because of this. When one page checkout is active, "Paystack payment" shows error 3. Some orders show with blank information. No name, no customer phone number or detail Seller Features Not Working - Seller does not receive email order when order is placed. Seller should receive email for order confirmation when customer places an order -Seller Dashboard not linked. -Update of Multimerch module and all seller features - Seller product bulk through CSV imports not working - Process orders and get loyal customers - answer customer questions about your products - receive email notifications about new orders - keep the customer updated using order statuses - communicate with the customer about their order - receive reviews and respond to customer feedback