Fix #15225: command+click opens in same tab:

Add metaKey (Command key on Mac or Windows key) to modifier keys
that prevent using Ajax

Signed-off-by: Lukas Bixen <lrb2_@outlook.com>

js/src/ajax.js

@@ -233,7 +233,7 @@ var AJAX = {
         // leave the browser deal with it natively (e.g: file download)
         // or leave an existing ajax event handler present elsewhere deal with it
         var href = $(this).attr('href');
-        if (typeof event !== 'undefined' && (event.shiftKey || event.ctrlKey)) {
+        if (typeof event !== 'undefined' && (event.shiftKey || event.ctrlKey || event.metaKey)) {
             return true;
         } else if ($(this).attr('target')) {
             return true;