added localized string to ajax javascript object in theme engine rather than the old theme.functions
restored to previous version of file
allow cart to load when ajax errors occur and when caching is enabled
Changes based on code review comments
Merge remote-tracking branch 'origin/get-cart-query-load-fix' into add-to-cart-jquery

FIxes jQuery load handling around add to cart ajax action

Conflicts:
	wpsc-components/theme-engine-v1/helpers/page.php
Merge pull request #900 from JeffPyeBrook/add-to-cart-jquery

Add to cart jquery fix