Pull Articles+ Search Results from New All Search API

[kevinreiss]

Have the summon (articles+) results block pull data from the new All search api. These changes will take place in the summon block module.

• [ ] 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)
• [ ] 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.
• [ ] Confirm display looks acceptable
• [ ] Confirm record links work
• [ ] Staging and Production both point to allsearch-api.princeton.edu