Bug: Screen options shows on all admin pages

Hi @mihaiimagely,
I found an error in the class called M_NextGen_Admin.

add_filter( 'screen_options_show_screen', array($this, 'remove_post_type_screen_options'));

function remove_post_type_screen_options()
{
    return C_NextGen_Admin_Page_Manager::is_requested_post_type() ? FALSE : TRUE;
}

It should look like:

function remove_post_type_screen_options($show_screen)
{
    return C_NextGen_Admin_Page_Manager::is_requested_post_type() ? FALSE : $show_screen;
}

https://i.imgur.com/hmnbBsI.png

The problem is that if you return always true, there will be a “Screen options” in the top right corner of every admin page which is not yours. Please fix this ASAP.