feat: add Google hack for maps

This allows anyone to run the live map without having to get an API  key from Google (wohoo, freedom)

index.php

@@ -49,9 +49,10 @@
     <script src="js/jquery-3.2.1.min.js"></script>
 
     <!-- Change the key below -->
-    <script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBbYDZMGkewhRTGRJS4wwSVuBipYlYf-SU"></script>
+    <script type="text/javascript" src="https://maps.google.com/maps/api/js"></script>
 
     <script>
+
     ///////////////////////////////////////////////////////////////////////////
     // CONFIGURATION STARTS HERE
     ///////////////////////////////////////////////////////////////////////////
@@ -75,11 +76,37 @@
     var _MAP_UVInvMap = false;
 
     // Set to the IP of the GTA server running "live_map" and change the port to the
-    // number that is in the "server.lua" file
+    // number that is set
     var _SETTINGS_socketUrl = "ws://localhost:30121"
 
-    </script>
+    // Do not remove unless you know what you're doing (and you have a google api key)
+    // Hack from https://stackoverflow.com/questions/38148097/google-maps-api-without-key/38809129#38809129
+    // hack Google Maps to bypass API v3 key (needed since 22 June 2016 http://googlegeodevelopers.blogspot.com.es/2016/06/building-for-scale-updates-to-google.html)
+    var target = document.head;
+    var observer = new MutationObserver(function(mutations) {
+        for (var i = 0; mutations[i]; ++i) { // notify when script to hack is added in HTML head
+            if (mutations[i].addedNodes[0].nodeName == "SCRIPT" && mutations[i].addedNodes[0].src.match(/\/AuthenticationService.Authenticate?/g)) {
+                var str = mutations[i].addedNodes[0].src.match(/[?&]callback=.*[&$]/g);
+                if (str) {
+                    if (str[0][str[0].length - 1] == '&') {
+                        str = str[0].substring(10, str[0].length - 1);
+                    } else {
+                        str = str[0].substring(10);
+                    }
+                    var split = str.split(".");
+                    var object = split[0];
+                    var method = split[1];
+                    window[object][method] = null; // remove censorship message function _xdc_._jmzdv6 (AJAX callback name "_jmzdv6" differs depending on URL)
+                    //window[object] = {}; // when we removed the complete object _xdc_, Google Maps tiles did not load when we moved the map with the mouse (no problem with OpenStreetMap)
+                }
+                observer.disconnect();
+            }
+        }
+    });
+    var config = { attributes: true, childList: true, characterData: true }
+    observer.observe(target, config);
 
+    </script>
 
     <?php
         printFirstJs($debug);