Fix: maestro html ES6 -> ES5

src/web/js/main.js

@@ -1,4 +1,4 @@
-let maestroID = -1;
+var maestroID = -1;
 
 $(document).ready(function() {
 	loadMaestroID();
@@ -21,7 +21,7 @@ function saveMaestroID(maestroID) {
 }
 
 function getParentDirectory(url) {
-	let directories = url.split("/");
+	var directories = url.split("/");
 	if(directories.length < 2)
 		return "";
 
@@ -29,7 +29,7 @@ function getParentDirectory(url) {
 }
 
 function getPage(url) {
-	let directories = url.split("/");
+	var directories = url.split("/");
 	if(directories.length < 1)
 		return "";
 
@@ -37,7 +37,7 @@ function getPage(url) {
 }
 
 function goHome() {
-	let url = window.location.href;
+	var url = window.location.href;
 
 	if(getParentDirectory(url) === "maestro") {
 		if(getPage(url) !== "main_menu.html")
@@ -66,12 +66,12 @@ function logout() {
 
 function showErrorMessage(message, type) {
 	console.log("showErrorMessage : " + message);
-	let messageBox = $("#message_box");
+	var messageBox = $("#message_box");
 
 	if(!messageBox)
 		return;
 
-	let alertType = "";
+	var alertType = "";
 	switch(type) {
 		case "success":
 		alertType = "alert-success";