Better product description

Previously a truncated version of the description was used which is
often too verbose and sometimes not even that helpful.

Now using the product name combined with the options text.

app/models/spree/taxjar.rb

@@ -203,7 +203,7 @@ def line_item_params
           {
             quantity: item.quantity,
             product_identifier: item.sku,
-            description: ActionView::Base.full_sanitizer.sanitize(item.description).try(:truncate, 150),
+            description: "#{item.product.name}: #{item.variant.options_text}",
             unit_price: item.price,
             sales_tax: item.additional_tax_total,
             discount: item.promo_total,