Pull Libguides Search Results from New All Search API

[kevinreiss]

Have the libguides search results block pull data from the new All search api. These changes will take place in the libguides search module.

• [x] Update data-source attribute with new all search API URL (there is a PHP file specific to the catalog in the drupal module that needs to be updated
• [x] Update JSON parsing to handle any changes to JSON data-structure from discoveryutils API. (this will update the catalog-specific javascript in the drupal module). This happens in this js file.
• [x] Confirm display looks acceptable
• [x] Confirm record links work
• [x] Staging and Production both point to allsearch-api.princeton.edu