Copy by reference as the object is not used anymore

JS methods weren't copied usign assign, so indexOf could not be found.
Giving up and allowing a copy by reference as we don't need that data anymore.

Author: dcorbacho

priv/www/js/formatters.js

@@ -193,7 +193,7 @@ function fmt_sync_state(queue) {
 function fmt_members(queue) {
     var res = '';
     var IsMayority = (queue.online.length >= (Math.floor(queue.members.length / 2) + 1));
-    var followers = Object.assign({}, queue.online);
+    var followers = queue.online;
     followers.splice(followers.indexOf(queue.node), 1);
     if (IsMayority) {
         res += ' <abbr title="Followers: ' + followers + '">+' +