Fix a typo with inStock vs in_stock template variables for the Product. It should be in_stock.

Add a new template variable, canEdit.
Change the default template to use canEdit to display the list of variants, so they aren't showed
twice.

lib/WebGUI/Help/Asset_Product.pm

@@ -18,6 +18,7 @@ our $HELP = {
         ],
         fields    => [],
         variables => [
+            { 'name' => 'canEdit' },
             { 'name' => 'brochure_icon' },
             { 'name' => 'brochure_url' },
             { 'name' => 'brochure_label' },