Provides product comparison with other products with the same taxon.
- Allows the admin user to select which taxonomies are comparable
- Provides a bookmark-able URL
- Only allows products comparison in comparable taxonomies
- Only compares products in the same exact taxon
- Compares up to 4 products
- Redirects to the product's taxon page if only one product is provided
- Doesn't rely on javascript
- Use javascript (if available) to:
- Disabling checkboxes when 4 products are selected
- Disabling submit button when less than 2 products are selected
- Submit to the correct URL (to avoid server-side redirection)