Refactor CSS and JavaScript for product comparison and wishlist functionality

- Updated `dr_materac.scss` to hide the compare/wishlist button by default.
- Enhanced JavaScript in `detail1526395446.tpl` to safely add an event listener for the opinions section link, ensuring it only attaches if the element exists.
- Cleaned up the `product-add-to-cart.tpl` by uncommenting the compare/wishlist button section for better visibility in the UI.

themes/leo_gstore/templates/catalog/_partials/product-add-to-cart.tpl

@@ -66,10 +66,10 @@
             <i class="material-icons shopping-cart">&#xE547;</i>
             {l s='Add to cart' d='Shop.Theme.Actions'}
           </button>
-          <!--           <div class="leo-compare-wishlist-button">
+          <div class="leo-compare-wishlist-button">
             {hook h='displayLeoWishlistButton' product=$product}
             {hook h='displayLeoCompareButton' product=$product}
-          </div> -->
+          </div>
         </div>
       </div>
     {/block}