mertnuhoglu

One more change is required. Change the following line:

$filter_link = $this->filter_posts_link( $status->slug )
>
$filter_link = $this->filter_posts_link( $status->slug, $post_type='page')

I solved the problem. Here are the instructions if you need it:

Inside wp-content/plugins/edit-flow/modules/dashboard/dashboard.php

Find this line:

wp_add_dashboard_widget( 'post_status_widget', __( 'Unpublished Content', 'edit-flow' ), array( $this, 'post_status_widget' ) );

Add the following line below (inside if clause):

wp_add_dashboard_widget( 'page_status_widget', __( 'Unpublished List Reviews', 'edit-flow' ), array( $this, 'page_status_widget' ) );

Copy the following function:

function post_status_widget

Change the duplicated function’s name to:

page_status_widget

Inside that function find the following line:

$post_count = wp_count_posts( 'post' );

Change it to:

$post_count = wp_count_posts( 'page' );

This is enough. If you want to improve the styling as well, then open lib/dashboard.css under the current directory. Copy all the lines containing post_status_widget and change those selector names to page_status_widget.

Thank you, this made it.

But there is one thing more. If I hide the sidebar, this style will be overridden by inline css. In order to prevent it to be overridden, I put the following style declaration:

body #header, body #footer, body #wrapper {
    width: 1200px;
}