backend/web/js/app.js
$(function() {
"use strict";
//Make the dashboard widgets sortable Using jquery UI
$(".connectedSortable").sortable({
placeholder: "sort-highlight",
connectWith: ".connectedSortable",
handle: ".box-header, .nav-tabs",
forcePlaceholderSize: true,
zIndex: 999999
}).disableSelection();
$(".connectedSortable .box-header, .connectedSortable .nav-tabs-custom").css("cursor", "move");
})