2.4.21 * Add ability to attach newly opened orphan tab to the current tab, when they have same website. * Add ability to collapse/expand configuration sections. * Execute command in the fake context menu, by an access key without Enter, when there is no other command with same access key. * Keyboard shortcuts to scroll tab bar never affect to non-active windows anymore. * Don't reload restored group tab until it is activated. * Control next focused tab for closed current tab correctly (regression)