fix: don't cache ajax request on course details page in Studio
fix: don't cache ajax request on course details page in Studio

Caching this was making the browser render a JSON with this request because of
the Backbone.js router.

eduNEXT/edx-platform,edx/edx-platform,eduNEXT/edx-platform,eduNEXT/edx-platform,arbrandes/edx-platform,angelapper/edx-platform,edx/edx-platform,arbrandes/edx-platform,arbrandes/edx-platform,arbrandes/edx-platform,edx/edx-platform,angelapper/edx-platform,angelapper/edx-platform,eduNEXT/edx-platform,edx/edx-platform,angelapper/edx-platform