Fixed Product page links

Due to a recent change to Shopify's user interface caused HTML links to break.

Product page links have been updated to open a new tab in the browser and instead of hyperlinking the full product name, an icon has been added after each Product name to allow you to visit the Product page in the Shopify Admin section.

Fix: "Returns" amount now capture all refunds/returns

A bug with how Returns were calculated caused reports to display an inflated Total sales number. Total sales now captures Returns made on any given day for the trailing 90 days. This change affects all reports that surface Total sales.