Add basic role management UI

ui/helpers/utils.js

@@ -0,0 +1,8 @@
+/**
+ * Asserts wheter the given object is empty
+ * @param {Object} obj Object to be checked
+ * @returns {Boolean}
+ */
+export function isObjectEmpty (obj) {
+  return Object.keys(obj).length === 0 && obj.constructor === Object
+}