Only add admin auth headers if auth data is present.

This prevents the initial /admin/auth request (prior to authorizing the
user) from having an api key of "undefined" passed along.

Author: GUI

src/api-umbrella/admin-ui/app/instance-initializers/jquery-ajax.js

@@ -4,9 +4,17 @@ export function initialize(appInstance) {
   const session = appInstance.lookup('service:session');
   $.ajaxPrefilter(function(options) {
     const data = session.get('data.authenticated');
-    options.headers = options.headers || {};
-    options.headers['X-Api-Key'] = data.api_key;
-    options.headers['X-Admin-Auth-Token'] = data.admin_auth_token;
+    if(data) {
+      options.headers = options.headers || {};
+
+      if(data.api_key) {
+        options.headers['X-Api-Key'] = data.api_key;
+      }
+
+      if(data.admin_auth_token) {
+        options.headers['X-Admin-Auth-Token'] = data.admin_auth_token;
+      }
+    }
   });
 }