[1.2] Adding a linter and reformat all code

js/utilsFunctions.js

@@ -1,3 +1,4 @@
+/* eslint-disable no-unused-vars */
 function injectScript(file, node) {
     var th = document.getElementsByTagName(node)[0];
     var s = document.createElement('script');
@@ -13,4 +14,4 @@ function injectLink(file, node) {
     link.type = "text/css";
     link.rel = "stylesheet";
     th.appendChild(link);
-}
+}