MAPG-133 pass CSRF token to JS

create separate mapguesser.js

public/static/js/mapguesser.js

@@ -0,0 +1,34 @@
+var MapGuesser = {
+    httpRequest: function (method, url, callback, data) {
+        var xhr = new XMLHttpRequest();
+
+        xhr.responseType = 'json';
+        xhr.onload = callback;
+
+        xhr.open(method, url, true);
+
+        if (method === 'POST') {
+            if (typeof data === 'undefined') {
+                data = new FormData();
+            }
+
+            data.append('anti_csrf_token', ANTI_CSRF_TOKEN);
+
+            xhr.send(data);
+        } else {
+            xhr.send();
+        }
+    }
+};
+
+(function () {
+    var anchors = document.getElementsByTagName('a');
+    for (var i = 0; i < anchors.length; i++) {
+        var a = anchors[i];
+        if (a.href !== 'javascript:;' && a.target !== '_blank') {
+            a.onclick = function () {
+                document.getElementById('loading').style.visibility = 'visible';
+            }
+        }
+    }
+})();