added variant id template variable to product variant loop

docs/changelog/7.x.x.txt

@@ -1,4 +1,5 @@
 7.6.0
+ - added variant id template variable to product variant loop
  - fixed: editting DataForm email fields resets their name
  - no longer preloads files that start with .
  - rfe: let package import inherit permissions

lib/WebGUI/Asset/Sku/Product.pm

@@ -1566,6 +1566,7 @@ sub view {
         my $price = sprintf('%.2f', $collateral->{price});
         my $desc  = $collateral->{shortdesc};
         push(@variantLoop,{
+                                   'variant_id'       => $id,
                                    'variant_controls' => $segment,
                                    'variant_sku'      => $collateral->{varSku},
                                    'variant_title'    => $desc,