[gh-489] Reference cms wdn template js/css/images on Dell hosted cdn
Currently template files are referenced from the root of the site (/wdn/templates_3.1) so they get loaded for every domain. On other sites we load these files from http://www.unl.edu/wdn/templates_3.1 but frontier is not set up for https.
Idea is to have a host for the template files like cdn.unl.edu on our Dell hosting and reference it from all sites in the cms.