Added target field to case, and added fee category vocab to opencase config

modules/opencase_entities/opencase_entities.module

@@ -91,7 +91,7 @@ function opencase_entities_theme() {
  * so that it can be used as a default callback for an entity reference field.
  */
 function opencase_entities_get($key) {
-  \Drupal::request()->query->get($key);
+  return \Drupal::request()->query->get($key);
 }
 
 /**