Updates Mako and Underscore templates as well as Backbone models and views so they work with catalog programs. Removes all remaining response munging from the back end.

ECOM-4422

This work removes most references to XSeries from the LMS in an attempt to be more general. ECOM-5018.

When program detail pages are enabled, cards on the listing page will link to their respective detail pages. Includes extensive cleanup of program listing tests. ECOM-4227.