Duplicate code that enables search functionality, cart functionality across all pages.

[nhalash]

• [x] fix search in settings.html

• [x] fix search in account.html

• [x] fix search in purchases.html

• [x] fix search in aboutus.html

• [x] fix search in trending.html

• [x] fix search in newarrivals.html

• [x] fix search in contactus.html

• [x] fix cart functionality in index.html

• [x] fix cart functionality in listing.html

• [x] fix cart functionality in accPage

• [x] fix cart functionality in purchases

• [x] fix cart functionality in trending

• [x] fix cart functionality in about

• [x] fix cart functionality in new arrivals

• [x] fix cart functionality in contact us