  Issue 118:	Group together all product items preview - fixed bug when $cart doesn't have discount
  Issue 118:	Group together all product items preview - fixed bug when $cart doesn't have discount

git-svn-id: 6e6a8e6a4c082c7ac65b38cbb4cbece468621f25@513 a237117d-c3a3-7e14-bcca-fd8395c59b2d

xpressengine/xe-module-shop,xpressengine/xe-module-shop