Revert "Encoding of query strings in SEO URLs"

This reverts commit c0f3c45a3403e5e6a4230b55038f15dc2f1ae76a.
Encoded query strings in SEO URLs
Use voucher limits in order editor

https://github.com/opencart/opencart/commit/f76166c7d997508b4232661f49b38a384ef9c7a9