Merged in feature/MAPG-116-improve-loading-animation (pull request #90)

MAPG-116 attach loading animation to anchors and not to beforeunload

views/templates/main_footer.php

@@ -1,7 +1,15 @@
     <script>
-        window.addEventListener('beforeunload', function (e) {
+        (function () {
+            var anchors = document.getElementsByTagName('a');
+            for (var i = 0; i < anchors.length; i++) {
+                var a = anchors[i];
+                if (a.target !== '_blank') {
+                    a.onclick = function () {
                         document.getElementById('loading').style.visibility = 'visible';
-        });
+                    }
+                }
+            }
+        })();
     </script>
 </body>
 </html>