feat: add version to title

The webapp now displays the current version next to it's name. E.g. "Live Map v2.2.7"

Author: TGRHavoc

index.php

@@ -193,7 +193,7 @@
 			</button>
 			<a class="navbar-brand" href="https://github.com/TGRHavoc/">
 					<img src="https://avatars1.githubusercontent.com/u/1770893?s=460&v=4" style="max-height: 30px" >
-					Live Map
+					Live Map v<?php echo Update::$version ?>
 			</a>
 
 			<div class="collapse navbar-collapse" id="navbarNav">

utils/update_checker.php

@@ -2,7 +2,7 @@
 
 class Update{
 
-    private static $version = "2.1.3";
+    public static $version = "2.1.3";
     private static $url = "https://raw.githubusercontent.com/TGRHavoc/live_map-interface/master/version.json";
     private static $downloadUrl = "http://github.com/TGRHavoc/live_map-interface";
     private static $latestVer = "";