preparation base preview fce..
Merge origin/master

Conflicts:
	wp-content/themes/dokan_wp_1.0.4/dokan-1.0.4/assets/css/bootstrap.css
show review form.. pro buyera/sellera... 

add_filter('comments_open', 'bbop_review_comments_open', 10, 2);
wp_die( __('You already rated this transaction.') );
only allowed users can review, but not themselfs..