Use the Dom based openseadragon function

Rather than depending on jquery

Author: jcoyne

app/javascript/spotlight/admin/blocks/solr_documents_embed_block.js

@@ -1,15 +1,15 @@
-SirTrevor.Blocks.SolrDocumentsEmbed = (function(){
-
+SirTrevor.Blocks.SolrDocumentsEmbed = (function () {
   return SirTrevor.Blocks.SolrDocumentsBase.extend({
     type: "solr_documents_embed",
     icon_name: "item_embed",
     show_image_selection: false,
 
-    item_options: function() { return "" },
+    item_options: function () {
+      return ""
+    },
 
-    afterPreviewLoad: function(options) {
-      $(this.inner).find('picture[data-openseadragon]').openseadragon();
+    afterPreviewLoad: function (options) {
+      this.inner.querySelector("picture[data-openseadragon]").openseadragon()
     }
-  });
-
-})();
+  })
+})()