Shorten product URL - without category

With this change, the URL is shortened as soon as the customer comes to a product.

The categories are displayed normally. Example:

The category link
https://ecommerce-support.com/Modified-Ecommerce/Ready-made-modules-for-Modified/Categories:::286_153_250.html

remains the same! This is because the category often contains important search terms.

The product link
https://ecommerce-support.com/Modified-Ecommerce/Ready-made-modules-for-Modified/Categories/Automatically-display-main-category-as-a-box::636.html

changes to

https://ecommerce-support.com/Automatically-display-main-category-as-a-box::636.html

If a customer or search engine still uses the old link, it will be redirected to the new link.